{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "LOW",
              "baseScore": 3.3,
              "baseSeverity": "LOW",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-56643",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-17T20:10:38.316606Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-401",
                "description": "CWE-401 Missing Release of Memory after Effective Lifetime",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-17T20:15:52.853Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:51:45.595Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/dccp/feat.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "623be080ab3c13d71570bd32f7202a8efa8e2252",
              "status": "affected",
              "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
              "versionType": "git"
            },
            {
              "lessThan": "c99507fff94b926fc92279c92d80f229c91cb85d",
              "status": "affected",
              "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
              "versionType": "git"
            },
            {
              "lessThan": "bc3d4423def1a9412a0ae454cb4477089ab79276",
              "status": "affected",
              "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
              "versionType": "git"
            },
            {
              "lessThan": "6ff67909ee2ffad911e3122616df41dee23ff4f6",
              "status": "affected",
              "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
              "versionType": "git"
            },
            {
              "lessThan": "d3ec686a369fae5034303061f003cd3f94ddfd23",
              "status": "affected",
              "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
              "versionType": "git"
            },
            {
              "lessThan": "9ee68b0f23706a77f53c832457b9384178b76421",
              "status": "affected",
              "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
              "versionType": "git"
            },
            {
              "lessThan": "22be4727a8f898442066bcac34f8a1ad0bc72e14",
              "status": "affected",
              "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/dccp/feat.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.29"
            },
            {
              "lessThan": "2.6.29",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.287",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.231",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.174",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.66",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.287",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.231",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.174",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.120",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.66",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.5",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndccp: Fix memory leak in dccp_feat_change_recv\n\nIf dccp_feat_push_confirm() fails after new value for SP feature was accepted\nwithout reconciliation (\u0027entry == NULL\u0027 branch), memory allocated for that value\nwith dccp_feat_clone_sp_val() is never freed.\n\nHere is the kmemleak stack for this:\n\nunreferenced object 0xffff88801d4ab488 (size 8):\n  comm \"syz-executor310\", pid 1127, jiffies 4295085598 (age 41.666s)\n  hex dump (first 8 bytes):\n    01 b4 4a 1d 80 88 ff ff                          ..J.....\n  backtrace:\n    [\u003c00000000db7cabfe\u003e] kmemdup+0x23/0x50 mm/util.c:128\n    [\u003c0000000019b38405\u003e] kmemdup include/linux/string.h:465 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_clone_sp_val net/dccp/feat.c:371 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_clone_sp_val net/dccp/feat.c:367 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_change_recv net/dccp/feat.c:1145 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_parse_options+0x1196/0x2180 net/dccp/feat.c:1416\n    [\u003c00000000b1f6d94a\u003e] dccp_parse_options+0xa2a/0x1260 net/dccp/options.c:125\n    [\u003c0000000030d7b621\u003e] dccp_rcv_state_process+0x197/0x13d0 net/dccp/input.c:650\n    [\u003c000000001f74c72e\u003e] dccp_v4_do_rcv+0xf9/0x1a0 net/dccp/ipv4.c:688\n    [\u003c00000000a6c24128\u003e] sk_backlog_rcv include/net/sock.h:1041 [inline]\n    [\u003c00000000a6c24128\u003e] __release_sock+0x139/0x3b0 net/core/sock.c:2570\n    [\u003c00000000cf1f3a53\u003e] release_sock+0x54/0x1b0 net/core/sock.c:3111\n    [\u003c000000008422fa23\u003e] inet_wait_for_connect net/ipv4/af_inet.c:603 [inline]\n    [\u003c000000008422fa23\u003e] __inet_stream_connect+0x5d0/0xf70 net/ipv4/af_inet.c:696\n    [\u003c0000000015b6f64d\u003e] inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:735\n    [\u003c0000000010122488\u003e] __sys_connect_file+0x15c/0x1a0 net/socket.c:1865\n    [\u003c00000000b4b70023\u003e] __sys_connect+0x165/0x1a0 net/socket.c:1882\n    [\u003c00000000f4cb3815\u003e] __do_sys_connect net/socket.c:1892 [inline]\n    [\u003c00000000f4cb3815\u003e] __se_sys_connect net/socket.c:1889 [inline]\n    [\u003c00000000f4cb3815\u003e] __x64_sys_connect+0x6e/0xb0 net/socket.c:1889\n    [\u003c00000000e7b1e839\u003e] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46\n    [\u003c0000000055e91434\u003e] entry_SYSCALL_64_after_hwframe+0x67/0xd1\n\nClean up the allocated memory in case of dccp_feat_push_confirm() failure\nand bail out with an error reset code.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:56:27.433Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/623be080ab3c13d71570bd32f7202a8efa8e2252"
        },
        {
          "url": "https://git.kernel.org/stable/c/c99507fff94b926fc92279c92d80f229c91cb85d"
        },
        {
          "url": "https://git.kernel.org/stable/c/bc3d4423def1a9412a0ae454cb4477089ab79276"
        },
        {
          "url": "https://git.kernel.org/stable/c/6ff67909ee2ffad911e3122616df41dee23ff4f6"
        },
        {
          "url": "https://git.kernel.org/stable/c/d3ec686a369fae5034303061f003cd3f94ddfd23"
        },
        {
          "url": "https://git.kernel.org/stable/c/9ee68b0f23706a77f53c832457b9384178b76421"
        },
        {
          "url": "https://git.kernel.org/stable/c/22be4727a8f898442066bcac34f8a1ad0bc72e14"
        }
      ],
      "title": "dccp: Fix memory leak in dccp_feat_change_recv",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56643",
    "datePublished": "2024-12-27T15:02:44.492Z",
    "dateReserved": "2024-12-27T15:00:39.840Z",
    "dateUpdated": "2026-05-11T20:56:27.433Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:51:48.405Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv6/route.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a95808252e8acc0123bacd2dff8b9af10bc145b7",
              "status": "affected",
              "version": "54c1a859efd9fd6cda05bc700315ba2519c14eba",
              "versionType": "git"
            },
            {
              "lessThan": "b90d061345bb8cd51fece561a800bae1c95448a6",
              "status": "affected",
              "version": "54c1a859efd9fd6cda05bc700315ba2519c14eba",
              "versionType": "git"
            },
            {
              "lessThan": "0b8903e6c881f72c6849d4952de742c656eb5ab9",
              "status": "affected",
              "version": "54c1a859efd9fd6cda05bc700315ba2519c14eba",
              "versionType": "git"
            },
            {
              "lessThan": "535add1e9f274502209cb997801208bbe1ae6c6f",
              "status": "affected",
              "version": "54c1a859efd9fd6cda05bc700315ba2519c14eba",
              "versionType": "git"
            },
            {
              "lessThan": "f43d12fd0fa8ee5b9caf8a3927e10d06431764d2",
              "status": "affected",
              "version": "54c1a859efd9fd6cda05bc700315ba2519c14eba",
              "versionType": "git"
            },
            {
              "lessThan": "8b591bd522b71c42a82898290e35d32b482047e4",
              "status": "affected",
              "version": "54c1a859efd9fd6cda05bc700315ba2519c14eba",
              "versionType": "git"
            },
            {
              "lessThan": "3301ab7d5aeb0fe270f73a3d4810c9d1b6a9f045",
              "status": "affected",
              "version": "54c1a859efd9fd6cda05bc700315ba2519c14eba",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "9c93e9c757c7d3d96027a06b9b4c4e37ca87ded7",
              "versionType": "git"
            },
            {
              "lessThan": "2.6.34",
              "status": "affected",
              "version": "2.6.33.2",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/ipv6/route.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.34"
            },
            {
              "lessThan": "2.6.34",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.287",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.231",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.174",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.66",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.287",
                  "versionStartIncluding": "2.6.34",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.231",
                  "versionStartIncluding": "2.6.34",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.174",
                  "versionStartIncluding": "2.6.34",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.120",
                  "versionStartIncluding": "2.6.34",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.66",
                  "versionStartIncluding": "2.6.34",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.5",
                  "versionStartIncluding": "2.6.34",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "2.6.34",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "2.6.33.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/ipv6: release expired exception dst cached in socket\n\nDst objects get leaked in ip6_negative_advice() when this function is\nexecuted for an expired IPv6 route located in the exception table. There\nare several conditions that must be fulfilled for the leak to occur:\n* an ICMPv6 packet indicating a change of the MTU for the path is received,\n  resulting in an exception dst being created\n* a TCP connection that uses the exception dst for routing packets must\n  start timing out so that TCP begins retransmissions\n* after the exception dst expires, the FIB6 garbage collector must not run\n  before TCP executes ip6_negative_advice() for the expired exception dst\n\nWhen TCP executes ip6_negative_advice() for an exception dst that has\nexpired and if no other socket holds a reference to the exception dst, the\nrefcount of the exception dst is 2, which corresponds to the increment\nmade by dst_init() and the increment made by the TCP socket for which the\nconnection is timing out. The refcount made by the socket is never\nreleased. The refcount of the dst is decremented in sk_dst_reset() but\nthat decrement is counteracted by a dst_hold() intentionally placed just\nbefore the sk_dst_reset() in ip6_negative_advice(). After\nip6_negative_advice() has finished, there is no other object tied to the\ndst. The socket lost its reference stored in sk_dst_cache and the dst is\nno longer in the exception table. The exception dst becomes a leaked\nobject.\n\nAs a result of this dst leak, an unbalanced refcount is reported for the\nloopback device of a net namespace being destroyed under kernels that do\nnot contain e5f80fcf869a (\"ipv6: give an IPv6 dev to blackhole_netdev\"):\nunregister_netdevice: waiting for lo to become free. Usage count = 2\n\nFix the dst leak by removing the dst_hold() in ip6_negative_advice(). The\npatch that introduced the dst_hold() in ip6_negative_advice() was\n92f1655aa2b22 (\"net: fix __dst_negative_advice() race\"). But 92f1655aa2b22\nmerely refactored the code with regards to the dst refcount so the issue\nwas present even before 92f1655aa2b22. The bug was introduced in\n54c1a859efd9f (\"ipv6: Don\u0027t drop cache route entry unless timer actually\nexpired.\") where the expired cached route is deleted and the sk_dst_cache\nmember of the socket is set to NULL by calling dst_negative_advice() but\nthe refcount belonging to the socket is left unbalanced.\n\nThe IPv4 version - ipv4_negative_advice() - is not affected by this bug.\nWhen the TCP connection times out ipv4_negative_advice() merely resets the\nsk_dst_cache of the socket while decrementing the refcount of the\nexception dst."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The leak is driven entirely by network input \u2014 a remote TCP peer causes an ICMPv6 Packet Too Big to be accepted (creating the PMTU exception dst cached in the socket) and then stops acknowledging data so the victim\u0027s TCP enters retransmission timeouts. No local access is needed; a plain client connection to any public IPv6 TCP service suffices.\nAC:L - The attacker controls every condition: they choose when the PTB is sent (fixing the 10-minute expiry deadline) and when to go silent (driving the RTO schedule), and `tcp_write_timeout()` invokes `__dst_negative_advice()` before the retransmit\u0027s `sk_dst_check()`, so the first RTO after expiry leaks the dst near-deterministically; the attempt is freely repeatable across thousands of parallel connections.\nPR:N - Reaching the code requires only an established TCP/IPv6 connection to the victim plus an ICMPv6 error naming that flow \u2014 no credentials, capabilities, or local account are involved, and it works against unauthenticated public services.\nUI:N - The attacker initiates the connection and sends the ICMPv6 PTB themselves; the victim\u0027s kernel reacts autonomously via its retransmission timer with no action by any user or administrator.\nS:U - The leaked dst and the resulting resource exhaustion stay within the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:N - The defect is an unbalanced refcount that over-holds an object; no memory is read out of bounds and no kernel data is exposed to the attacker.\nI:N - Over-holding a reference cannot corrupt memory or alter kernel or user data \u2014 the object is merely never freed, so there is no write or control-flow primitive.\nA:H - The orphaned dst permanently pins its `net_device` (`dst_init()` \u2192 `netdev_hold()`) and `inet6_dev`, so `unregister_netdevice` hangs forever (\"waiting for lo to become free\"), blocking the single global `cleanup_net` worker and thereby all network-namespace teardown host-wide \u2014 an unrecoverable hang on container hosts, compounded by unbounded kernel memory leakage under repeated triggering."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:45:44.800Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a95808252e8acc0123bacd2dff8b9af10bc145b7"
        },
        {
          "url": "https://git.kernel.org/stable/c/b90d061345bb8cd51fece561a800bae1c95448a6"
        },
        {
          "url": "https://git.kernel.org/stable/c/0b8903e6c881f72c6849d4952de742c656eb5ab9"
        },
        {
          "url": "https://git.kernel.org/stable/c/535add1e9f274502209cb997801208bbe1ae6c6f"
        },
        {
          "url": "https://git.kernel.org/stable/c/f43d12fd0fa8ee5b9caf8a3927e10d06431764d2"
        },
        {
          "url": "https://git.kernel.org/stable/c/8b591bd522b71c42a82898290e35d32b482047e4"
        },
        {
          "url": "https://git.kernel.org/stable/c/3301ab7d5aeb0fe270f73a3d4810c9d1b6a9f045"
        }
      ],
      "title": "net/ipv6: release expired exception dst cached in socket",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56644",
    "datePublished": "2024-12-27T15:02:45.664Z",
    "dateReserved": "2024-12-27T15:00:39.840Z",
    "dateUpdated": "2026-08-05T11:45:44.800Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:51:51.200Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/can/j1939/transport.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "224e606a8d8e8c7db94036272c47a37455667313",
              "status": "affected",
              "version": "9d71dd0c70099914fcd063135da3c580865e924c",
              "versionType": "git"
            },
            {
              "lessThan": "b3282c2bebeeb82ceec492ee4972f51ee7a4a132",
              "status": "affected",
              "version": "9d71dd0c70099914fcd063135da3c580865e924c",
              "versionType": "git"
            },
            {
              "lessThan": "4199dd78a59896e091d3a7a05a77451aa7fd724d",
              "status": "affected",
              "version": "9d71dd0c70099914fcd063135da3c580865e924c",
              "versionType": "git"
            },
            {
              "lessThan": "f117cba69cbbd496babb3defcdf440df4fd6fe14",
              "status": "affected",
              "version": "9d71dd0c70099914fcd063135da3c580865e924c",
              "versionType": "git"
            },
            {
              "lessThan": "426d94815e12b6bdb9a75af294fbbafb9301601d",
              "status": "affected",
              "version": "9d71dd0c70099914fcd063135da3c580865e924c",
              "versionType": "git"
            },
            {
              "lessThan": "68fceb143b635cdc59fed3896d5910aff38f345e",
              "status": "affected",
              "version": "9d71dd0c70099914fcd063135da3c580865e924c",
              "versionType": "git"
            },
            {
              "lessThan": "a8c695005bfe6569acd73d777ca298ddddd66105",
              "status": "affected",
              "version": "9d71dd0c70099914fcd063135da3c580865e924c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/can/j1939/transport.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.4"
            },
            {
              "lessThan": "5.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.287",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.231",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.174",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.66",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.287",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.231",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.174",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.120",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.66",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.5",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: j1939: j1939_session_new(): fix skb reference counting\n\nSince j1939_session_skb_queue() does an extra skb_get() for each new\nskb, do the same for the initial one in j1939_session_new() to avoid\nrefcount underflow.\n\n[mkl: clean up commit message]"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The vulnerable path is in the net/ stack and is entered purely from data received from a remote J1939 peer \u2014 a TP.CM_RTS frame reaches j1939_xtp_rx_rts_session_new() \u2192 j1939_session_fresh_new() \u2192 j1939_session_new(), and peer-supplied TP.CM_CTS frames drive the drop_old free. J1939 segments are routinely bridged to IP by telematics/gateway units, and the kernel CNA scored the equivalent j1939 RTS reception path in the same file (CVE-2026-22997) as AV:N.\nAC:L - The reference-count underflow itself is deterministic \u2014 every session created via j1939_session_new() has an under-referenced head skb, and tearing the session down (timeout, abort, or completion) triggers it. Where the premature free is used, the attacker controls both sides of the race by choosing when and how many RTS/CTS frames to inject and can repeat it indefinitely.\nPR:N - A peer transmitting J1939 frames needs no credentials, account, or privileges on the target \u2014 the stack parses TP.CM_RTS and creates the session automatically. Locally the same defect is reachable from an unprivileged AF_CAN/CAN_J1939 sendmsg(), including over vcan created inside a user namespace.\nUI:N - The j1939 receive handler processes incoming frames and allocates the session in softirq context with no action by any local user. The only precondition is a bound j1939 socket, which is the normal steady state of any device using this stack.\nS:U - The corrupted objects (sk_buff and its heap slab) and the resulting impact are entirely within the kernel\u0027s own security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - After the premature free, j1939_session_tx_dat() memcpy()s from the freed skb buffer into outgoing CAN frames, transmitting reclaimed kernel heap contents to the attacker on the bus \u2014 a direct read primitive. More generally, an skb use-after-free lets the attacker groom the freed slab and read back kernel memory.\nI:H - The refcount underflow yields a use-after-free and double-free of an sk_buff, allowing the attacker to reclaim the freed object with controlled data and corrupt adjacent kernel state \u2014 the standard heap-spray primitive for control-flow hijack.\nA:H - The underflow triggers refcount_t saturation warnings (fatal under panic_on_warn) and leaks the skb, while the use-after-free/double-free of the queued skb readily oopses the kernel; either can be induced repeatedly by an unauthenticated peer."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:45:46.741Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/224e606a8d8e8c7db94036272c47a37455667313"
        },
        {
          "url": "https://git.kernel.org/stable/c/b3282c2bebeeb82ceec492ee4972f51ee7a4a132"
        },
        {
          "url": "https://git.kernel.org/stable/c/4199dd78a59896e091d3a7a05a77451aa7fd724d"
        },
        {
          "url": "https://git.kernel.org/stable/c/f117cba69cbbd496babb3defcdf440df4fd6fe14"
        },
        {
          "url": "https://git.kernel.org/stable/c/426d94815e12b6bdb9a75af294fbbafb9301601d"
        },
        {
          "url": "https://git.kernel.org/stable/c/68fceb143b635cdc59fed3896d5910aff38f345e"
        },
        {
          "url": "https://git.kernel.org/stable/c/a8c695005bfe6569acd73d777ca298ddddd66105"
        }
      ],
      "title": "can: j1939: j1939_session_new(): fix skb reference counting",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56645",
    "datePublished": "2024-12-27T15:02:46.531Z",
    "dateReserved": "2024-12-27T15:00:39.840Z",
    "dateUpdated": "2026-08-05T11:45:46.741Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-56648",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T20:00:29.164296Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-908",
                "description": "CWE-908 Use of Uninitialized Resource",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T20:07:11.414Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:51:54.024Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/hsr/hsr_forward.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "aa632691c722a123e47ccd05a3afdd5f87a36061",
              "status": "affected",
              "version": "f6442ee08fe66c8e45c4f246531a2aaf4f17a7a7",
              "versionType": "git"
            },
            {
              "lessThan": "c6e778901d0055356c4fb223058364cae731494a",
              "status": "affected",
              "version": "48b491a5cc74333c4a6a82fe21cea42c055a3b0b",
              "versionType": "git"
            },
            {
              "lessThan": "6bb5c8ebc99f0671dbd3c9408ebaf935c3951186",
              "status": "affected",
              "version": "48b491a5cc74333c4a6a82fe21cea42c055a3b0b",
              "versionType": "git"
            },
            {
              "lessThan": "3c215663b3e27a3b08cefcaea623ff54c70c8035",
              "status": "affected",
              "version": "48b491a5cc74333c4a6a82fe21cea42c055a3b0b",
              "versionType": "git"
            },
            {
              "lessThan": "7ea527fbd7b94d0bee64a0a7e98279bcc654b322",
              "status": "affected",
              "version": "48b491a5cc74333c4a6a82fe21cea42c055a3b0b",
              "versionType": "git"
            },
            {
              "lessThan": "b9653d19e556c6afd035602927a93d100a0d7644",
              "status": "affected",
              "version": "48b491a5cc74333c4a6a82fe21cea42c055a3b0b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4ffd1d4a6b306ff69cbe412d2c54d2dd349ff436",
              "versionType": "git"
            },
            {
              "lessThan": "5.10.231",
              "status": "affected",
              "version": "5.10.42",
              "versionType": "semver"
            },
            {
              "lessThan": "5.13",
              "status": "affected",
              "version": "5.12.9",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/hsr/hsr_forward.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.231",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.174",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.66",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.231",
                  "versionStartIncluding": "5.10.42",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.174",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.120",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.66",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.5",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.12.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hsr: avoid potential out-of-bound access in fill_frame_info()\n\nsyzbot is able to feed a packet with 14 bytes, pretending\nit is a vlan one.\n\nSince fill_frame_info() is relying on skb-\u003emac_len already,\nextend the check to cover this case.\n\nBUG: KMSAN: uninit-value in fill_frame_info net/hsr/hsr_forward.c:709 [inline]\n BUG: KMSAN: uninit-value in hsr_forward_skb+0x9ee/0x3b10 net/hsr/hsr_forward.c:724\n  fill_frame_info net/hsr/hsr_forward.c:709 [inline]\n  hsr_forward_skb+0x9ee/0x3b10 net/hsr/hsr_forward.c:724\n  hsr_dev_xmit+0x2f0/0x350 net/hsr/hsr_device.c:235\n  __netdev_start_xmit include/linux/netdevice.h:5002 [inline]\n  netdev_start_xmit include/linux/netdevice.h:5011 [inline]\n  xmit_one net/core/dev.c:3590 [inline]\n  dev_hard_start_xmit+0x247/0xa20 net/core/dev.c:3606\n  __dev_queue_xmit+0x366a/0x57d0 net/core/dev.c:4434\n  dev_queue_xmit include/linux/netdevice.h:3168 [inline]\n  packet_xmit+0x9c/0x6c0 net/packet/af_packet.c:276\n  packet_snd net/packet/af_packet.c:3146 [inline]\n  packet_sendmsg+0x91ae/0xa6f0 net/packet/af_packet.c:3178\n  sock_sendmsg_nosec net/socket.c:711 [inline]\n  __sock_sendmsg+0x30f/0x380 net/socket.c:726\n  __sys_sendto+0x594/0x750 net/socket.c:2197\n  __do_sys_sendto net/socket.c:2204 [inline]\n  __se_sys_sendto net/socket.c:2200 [inline]\n  __x64_sys_sendto+0x125/0x1d0 net/socket.c:2200\n  x64_sys_call+0x346a/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:45\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nUninit was created at:\n  slab_post_alloc_hook mm/slub.c:4091 [inline]\n  slab_alloc_node mm/slub.c:4134 [inline]\n  kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4186\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587\n  __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678\n  alloc_skb include/linux/skbuff.h:1323 [inline]\n  alloc_skb_with_frags+0xc8/0xd00 net/core/skbuff.c:6612\n  sock_alloc_send_pskb+0xa81/0xbf0 net/core/sock.c:2881\n  packet_alloc_skb net/packet/af_packet.c:2995 [inline]\n  packet_snd net/packet/af_packet.c:3089 [inline]\n  packet_sendmsg+0x74c6/0xa6f0 net/packet/af_packet.c:3178\n  sock_sendmsg_nosec net/socket.c:711 [inline]\n  __sock_sendmsg+0x30f/0x380 net/socket.c:726\n  __sys_sendto+0x594/0x750 net/socket.c:2197\n  __do_sys_sendto net/socket.c:2204 [inline]\n  __se_sys_sendto net/socket.c:2200 [inline]\n  __x64_sys_sendto+0x125/0x1d0 net/socket.c:2200\n  x64_sys_call+0x346a/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:45\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T15:55:44.998Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/aa632691c722a123e47ccd05a3afdd5f87a36061"
        },
        {
          "url": "https://git.kernel.org/stable/c/c6e778901d0055356c4fb223058364cae731494a"
        },
        {
          "url": "https://git.kernel.org/stable/c/6bb5c8ebc99f0671dbd3c9408ebaf935c3951186"
        },
        {
          "url": "https://git.kernel.org/stable/c/3c215663b3e27a3b08cefcaea623ff54c70c8035"
        },
        {
          "url": "https://git.kernel.org/stable/c/7ea527fbd7b94d0bee64a0a7e98279bcc654b322"
        },
        {
          "url": "https://git.kernel.org/stable/c/b9653d19e556c6afd035602927a93d100a0d7644"
        }
      ],
      "title": "net: hsr: avoid potential out-of-bound access in fill_frame_info()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56648",
    "datePublished": "2024-12-27T15:02:48.687Z",
    "dateReserved": "2024-12-27T15:00:39.840Z",
    "dateUpdated": "2026-05-23T15:55:44.998Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.1,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-56650",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T20:00:22.683789Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-125",
                "description": "CWE-125 Out-of-bounds Read",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T20:07:11.150Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:51:56.813Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/xt_LED.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "147a42bb02de8735cb08476be6d0917987d022c2",
              "status": "affected",
              "version": "268cb38e1802db560c73167e643f14a3dcb4b07c",
              "versionType": "git"
            },
            {
              "lessThan": "ad28612ebae1fcc1104bd432e99e99d87f6bfe09",
              "status": "affected",
              "version": "268cb38e1802db560c73167e643f14a3dcb4b07c",
              "versionType": "git"
            },
            {
              "lessThan": "36a9d94dac28beef6b8abba46ba8874320d3e800",
              "status": "affected",
              "version": "268cb38e1802db560c73167e643f14a3dcb4b07c",
              "versionType": "git"
            },
            {
              "lessThan": "ab9916321c95f5280b72b4c5055e269f98627efe",
              "status": "affected",
              "version": "268cb38e1802db560c73167e643f14a3dcb4b07c",
              "versionType": "git"
            },
            {
              "lessThan": "a9bcc0b70d9baf3ff005874489a0dc9d023b54c3",
              "status": "affected",
              "version": "268cb38e1802db560c73167e643f14a3dcb4b07c",
              "versionType": "git"
            },
            {
              "lessThan": "c40c96d98e536fc1daaa125c2332b988615e30a4",
              "status": "affected",
              "version": "268cb38e1802db560c73167e643f14a3dcb4b07c",
              "versionType": "git"
            },
            {
              "lessThan": "04317f4eb2aad312ad85c1a17ad81fe75f1f9bc7",
              "status": "affected",
              "version": "268cb38e1802db560c73167e643f14a3dcb4b07c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/xt_LED.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.30"
            },
            {
              "lessThan": "2.6.30",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.287",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.231",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.174",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.66",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.287",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.231",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.174",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.120",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.66",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.5",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: x_tables: fix LED ID check in led_tg_check()\n\nSyzbot has reported the following BUG detected by KASAN:\n\nBUG: KASAN: slab-out-of-bounds in strlen+0x58/0x70\nRead of size 1 at addr ffff8881022da0c8 by task repro/5879\n...\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x241/0x360\n ? __pfx_dump_stack_lvl+0x10/0x10\n ? __pfx__printk+0x10/0x10\n ? _printk+0xd5/0x120\n ? __virt_addr_valid+0x183/0x530\n ? __virt_addr_valid+0x183/0x530\n print_report+0x169/0x550\n ? __virt_addr_valid+0x183/0x530\n ? __virt_addr_valid+0x183/0x530\n ? __virt_addr_valid+0x45f/0x530\n ? __phys_addr+0xba/0x170\n ? strlen+0x58/0x70\n kasan_report+0x143/0x180\n ? strlen+0x58/0x70\n strlen+0x58/0x70\n kstrdup+0x20/0x80\n led_tg_check+0x18b/0x3c0\n xt_check_target+0x3bb/0xa40\n ? __pfx_xt_check_target+0x10/0x10\n ? stack_depot_save_flags+0x6e4/0x830\n ? nft_target_init+0x174/0xc30\n nft_target_init+0x82d/0xc30\n ? __pfx_nft_target_init+0x10/0x10\n ? nf_tables_newrule+0x1609/0x2980\n ? nf_tables_newrule+0x1609/0x2980\n ? rcu_is_watching+0x15/0xb0\n ? nf_tables_newrule+0x1609/0x2980\n ? nf_tables_newrule+0x1609/0x2980\n ? __kmalloc_noprof+0x21a/0x400\n nf_tables_newrule+0x1860/0x2980\n ? __pfx_nf_tables_newrule+0x10/0x10\n ? __nla_parse+0x40/0x60\n nfnetlink_rcv+0x14e5/0x2ab0\n ? __pfx_validate_chain+0x10/0x10\n ? __pfx_nfnetlink_rcv+0x10/0x10\n ? __lock_acquire+0x1384/0x2050\n ? netlink_deliver_tap+0x2e/0x1b0\n ? __pfx_lock_release+0x10/0x10\n ? netlink_deliver_tap+0x2e/0x1b0\n netlink_unicast+0x7f8/0x990\n ? __pfx_netlink_unicast+0x10/0x10\n ? __virt_addr_valid+0x183/0x530\n ? __check_object_size+0x48e/0x900\n netlink_sendmsg+0x8e4/0xcb0\n ? __pfx_netlink_sendmsg+0x10/0x10\n ? aa_sock_msg_perm+0x91/0x160\n ? __pfx_netlink_sendmsg+0x10/0x10\n __sock_sendmsg+0x223/0x270\n ____sys_sendmsg+0x52a/0x7e0\n ? __pfx_____sys_sendmsg+0x10/0x10\n __sys_sendmsg+0x292/0x380\n ? __pfx___sys_sendmsg+0x10/0x10\n ? lockdep_hardirqs_on_prepare+0x43d/0x780\n ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10\n ? exc_page_fault+0x590/0x8c0\n ? do_syscall_64+0xb6/0x230\n do_syscall_64+0xf3/0x230\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n...\n \u003c/TASK\u003e\n\nSince an invalid (without \u0027\\0\u0027 byte at all) byte sequence may be passed\nfrom userspace, add an extra check to ensure that such a sequence is\nrejected as possible ID and so never passed to \u0027kstrdup()\u0027 and further."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable path is entered only through local syscalls \u2014 `sendmsg()` on a NETLINK_NETFILTER socket (nf_tables/nft_compat) or `setsockopt(IPT_SO_SET_REPLACE)` on the legacy iptables interface. No remote peer can supply the malformed `xt_led_info` blob.\nAC:L - The attacker fully controls all 40 bytes of the target info blob and simply omits any NUL byte, making `strlen()` read out of bounds deterministically on every attempt; there is no race, no memory-layout precondition, and the required xt_LED module is present in stock distro and embedded kernel configs.\nPR:L - `nf_tables_newrule` requires CAP_NET_ADMIN only in the network namespace\u0027s owning user namespace, which any unprivileged user obtains with `unshare -Urn` \u2014 exactly how the syzbot reproducer reached it.\nUI:N - The attacker performs the entire sequence \u2014 create netns, add an nftables rule with an xt LED target \u2014 with no action by any other user, and reads the leaked bytes back from sysfs itself.\nS:U - The out-of-bounds read stays within the kernel\u0027s own heap and the disclosed data is exposed through kernel-managed interfaces; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - This is an unbounded slab out-of-bounds read whose contents are not merely touched but `kstrdup()`\u0027d into a globally registered LED trigger name, then printed into the world-readable (0644) `/sys/class/leds/*/trigger` file, plus an `-EEXIST` collision oracle from `led_trigger_register()` \u2014 giving an unprivileged user a practical adjacent-kernel-heap disclosure primitive that can leak pointers and defeat KASLR/heap-layout hardening.\nI:N - `kstrdup()` allocates exactly `strlen()+1` bytes and the sysfs printer clamps with `vscnprintf`, so no memory is written out of bounds and no kernel data structure is corrupted by the flaw.\nA:H - The `strlen()` walk continues until it happens to find a zero byte and can fault on a KFENCE guard page \u2014 enabled by default in production distro and Android kernels \u2014 or run past mapped memory, oopsing the kernel; on KASAN builds it panics outright, and the attacker can repeat the attempt arbitrarily."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:45:47.823Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/147a42bb02de8735cb08476be6d0917987d022c2"
        },
        {
          "url": "https://git.kernel.org/stable/c/ad28612ebae1fcc1104bd432e99e99d87f6bfe09"
        },
        {
          "url": "https://git.kernel.org/stable/c/36a9d94dac28beef6b8abba46ba8874320d3e800"
        },
        {
          "url": "https://git.kernel.org/stable/c/ab9916321c95f5280b72b4c5055e269f98627efe"
        },
        {
          "url": "https://git.kernel.org/stable/c/a9bcc0b70d9baf3ff005874489a0dc9d023b54c3"
        },
        {
          "url": "https://git.kernel.org/stable/c/c40c96d98e536fc1daaa125c2332b988615e30a4"
        },
        {
          "url": "https://git.kernel.org/stable/c/04317f4eb2aad312ad85c1a17ad81fe75f1f9bc7"
        }
      ],
      "title": "netfilter: x_tables: fix LED ID check in led_tg_check()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56650",
    "datePublished": "2024-12-27T15:02:50.098Z",
    "dateReserved": "2024-12-27T15:00:39.840Z",
    "dateUpdated": "2026-08-05T11:45:47.823Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-56658",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-06T16:07:39.771240Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-06T16:14:32.574Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:51:59.582Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/net_namespace.h",
            "net/core/net_namespace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c261dcd61c9e88a8f1a66654354d32295a975230",
              "status": "affected",
              "version": "a8a572a6b5f2a79280d6e302cb3c1cb1fbaeb3e8",
              "versionType": "git"
            },
            {
              "lessThan": "dac465986a4a38cd2f13e934f562b6ca344e5720",
              "status": "affected",
              "version": "a8a572a6b5f2a79280d6e302cb3c1cb1fbaeb3e8",
              "versionType": "git"
            },
            {
              "lessThan": "3267b254dc0a04dfa362a2be24573cfa6d2d78f5",
              "status": "affected",
              "version": "a8a572a6b5f2a79280d6e302cb3c1cb1fbaeb3e8",
              "versionType": "git"
            },
            {
              "lessThan": "b7a79e51297f7b82adb687086f5cb2da446f1e40",
              "status": "affected",
              "version": "a8a572a6b5f2a79280d6e302cb3c1cb1fbaeb3e8",
              "versionType": "git"
            },
            {
              "lessThan": "6610c7f8a8d47fd1123eed55ba8c11c2444d8842",
              "status": "affected",
              "version": "a8a572a6b5f2a79280d6e302cb3c1cb1fbaeb3e8",
              "versionType": "git"
            },
            {
              "lessThan": "0f6ede9fbc747e2553612271bce108f7517e7a45",
              "status": "affected",
              "version": "a8a572a6b5f2a79280d6e302cb3c1cb1fbaeb3e8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "3e29fa5b742479f73400468314a1c6b9cf553ee4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ce43f6a650a6689551a217276fb0dcca33790425",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "eeca98948d8c4922e6deb16bfc9ee0bd9902dbb0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1bd631fc9a4515878c1bb7effd19335d2f2d87c2",
              "versionType": "git"
            },
            {
              "lessThan": "3.13",
              "status": "affected",
              "version": "3.12.54",
              "versionType": "semver"
            },
            {
              "lessThan": "3.19",
              "status": "affected",
              "version": "3.18.27",
              "versionType": "semver"
            },
            {
              "lessThan": "4.2",
              "status": "affected",
              "version": "4.1.17",
              "versionType": "semver"
            },
            {
              "lessThan": "4.4",
              "status": "affected",
              "version": "4.3.5",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/net/net_namespace.h",
            "net/core/net_namespace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.4"
            },
            {
              "lessThan": "4.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.237",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.181",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.67",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.237",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.181",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.121",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.67",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.6",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.12.54",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.18.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.1.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.3.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: defer final \u0027struct net\u0027 free in netns dismantle\n\nIlya reported a slab-use-after-free in dst_destroy [1]\n\nIssue is in xfrm6_net_init() and xfrm4_net_init() :\n\nThey copy xfrm[46]_dst_ops_template into net-\u003exfrm.xfrm[46]_dst_ops.\n\nBut net structure might be freed before all the dst callbacks are\ncalled. So when dst_destroy() calls later :\n\nif (dst-\u003eops-\u003edestroy)\n    dst-\u003eops-\u003edestroy(dst);\n\ndst-\u003eops points to the old net-\u003exfrm.xfrm[46]_dst_ops, which has been freed.\n\nSee a relevant issue fixed in :\n\nac888d58869b (\"net: do not delay dst_entries_add() in dst_release()\")\n\nA fix is to queue the \u0027struct net\u0027 to be freed after one\nanother cleanup_net() round (and existing rcu_barrier())\n\n[1]\n\nBUG: KASAN: slab-use-after-free in dst_destroy (net/core/dst.c:112)\nRead of size 8 at addr ffff8882137ccab0 by task swapper/37/0\nDec 03 05:46:18 kernel:\nCPU: 37 UID: 0 PID: 0 Comm: swapper/37 Kdump: loaded Not tainted 6.12.0 #67\nHardware name: Red Hat KVM/RHEL, BIOS 1.16.1-1.el9 04/01/2014\nCall Trace:\n \u003cIRQ\u003e\ndump_stack_lvl (lib/dump_stack.c:124)\nprint_address_description.constprop.0 (mm/kasan/report.c:378)\n? dst_destroy (net/core/dst.c:112)\nprint_report (mm/kasan/report.c:489)\n? dst_destroy (net/core/dst.c:112)\n? kasan_addr_to_slab (mm/kasan/common.c:37)\nkasan_report (mm/kasan/report.c:603)\n? dst_destroy (net/core/dst.c:112)\n? rcu_do_batch (kernel/rcu/tree.c:2567)\ndst_destroy (net/core/dst.c:112)\nrcu_do_batch (kernel/rcu/tree.c:2567)\n? __pfx_rcu_do_batch (kernel/rcu/tree.c:2491)\n? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4339 kernel/locking/lockdep.c:4406)\nrcu_core (kernel/rcu/tree.c:2825)\nhandle_softirqs (kernel/softirq.c:554)\n__irq_exit_rcu (kernel/softirq.c:589 kernel/softirq.c:428 kernel/softirq.c:637)\nirq_exit_rcu (kernel/softirq.c:651)\nsysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049)\n \u003c/IRQ\u003e\n \u003cTASK\u003e\nasm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702)\nRIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:92 arch/x86/kernel/process.c:743)\nCode: 00 4d 29 c8 4c 01 c7 4c 29 c2 e9 6e ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 90 0f 00 2d c7 c9 27 00 fb f4 \u003cfa\u003e c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90\nRSP: 0018:ffff888100d2fe00 EFLAGS: 00000246\nRAX: 00000000001870ed RBX: 1ffff110201a5fc2 RCX: ffffffffb61a3e46\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb3d4d123\nRBP: 0000000000000000 R08: 0000000000000001 R09: ffffed11c7e1835d\nR10: ffff888e3f0c1aeb R11: 0000000000000000 R12: 0000000000000000\nR13: ffff888100d20000 R14: dffffc0000000000 R15: 0000000000000000\n? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:148)\n? cpuidle_idle_call (kernel/sched/idle.c:186)\ndefault_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118)\ncpuidle_idle_call (kernel/sched/idle.c:186)\n? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168)\n? lock_release (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5848)\n? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406)\n? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59)\ndo_idle (kernel/sched/idle.c:326)\ncpu_startup_entry (kernel/sched/idle.c:423 (discriminator 1))\nstart_secondary (arch/x86/kernel/smpboot.c:202 arch/x86/kernel/smpboot.c:282)\n? __pfx_start_secondary (arch/x86/kernel/smpboot.c:232)\n? soft_restart_cpu (arch/x86/kernel/head_64.S:452)\ncommon_startup_64 (arch/x86/kernel/head_64.S:414)\n \u003c/TASK\u003e\nDec 03 05:46:18 kernel:\nAllocated by task 12184:\nkasan_save_stack (mm/kasan/common.c:48)\nkasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69)\n__kasan_slab_alloc (mm/kasan/common.c:319 mm/kasan/common.c:345)\nkmem_cache_alloc_noprof (mm/slub.c:4085 mm/slub.c:4134 mm/slub.c:4141)\ncopy_net_ns (net/core/net_namespace.c:421 net/core/net_namespace.c:480)\ncreate_new_namespaces\n---truncated---"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Triggering requires local netns creation/teardown (`unshare`/`clone` with `CLONE_NEWNET`) combined with local `NETLINK_XFRM` configuration; there is no path by which a remote peer can drive the netns dismantle that frees `struct net`.\nAC:L - The attacker controls both sides of the race \u2014 it creates the netns, populates the xfrm policies/SAs that produce bundle dsts, and chooses when to tear the namespace down \u2014 and can loop the sequence indefinitely; the window is wide enough that it was hit incidentally on a normal production workload.\nPR:L - An unprivileged local user gets everything needed via `unshare -Urn`: `xfrm_user` is gated only by `netlink_net_capable(skb, CAP_NET_ADMIN)`, which checks `ns_capable()` against the new netns\u0027s own user namespace, so no real root is required.\nUI:N - The entire sequence \u2014 namespace creation, xfrm configuration, traffic generation, namespace destruction \u2014 is performed by the attacker\u0027s own process with no victim action.\nS:U - The corruption and its consequences are confined to the kernel\u0027s own security authority; no hypervisor, IOMMU, or other authority boundary is crossed.\nC:H - This is a slab use-after-free on a `SLAB_ACCOUNT` object the attacker can reclaim and spray; `dst_destroy()` reads pointers (`-\u003edestroy`, `-\u003ekmem_cachep`) out of the freed allocation, and controlling the reclaimed contents yields kernel memory disclosure primitives.\nI:H - The freed memory is read as a function-pointer table and immediately called (`dst-\u003eops-\u003edestroy(dst)`), and `dst-\u003eops-\u003ekmem_cachep` is fed to `kmem_cache_free()` \u2014 an indirect call plus an arbitrary-cache free through attacker-reclaimable heap memory, i.e. a control-flow-hijack primitive.\nA:H - The use-after-free reliably produces a KASAN-reported bad dereference in RCU softirq context, and dereferencing/calling stale slab contents panics or oopses the kernel even without successful exploitation."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:45:55.213Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c261dcd61c9e88a8f1a66654354d32295a975230"
        },
        {
          "url": "https://git.kernel.org/stable/c/dac465986a4a38cd2f13e934f562b6ca344e5720"
        },
        {
          "url": "https://git.kernel.org/stable/c/3267b254dc0a04dfa362a2be24573cfa6d2d78f5"
        },
        {
          "url": "https://git.kernel.org/stable/c/b7a79e51297f7b82adb687086f5cb2da446f1e40"
        },
        {
          "url": "https://git.kernel.org/stable/c/6610c7f8a8d47fd1123eed55ba8c11c2444d8842"
        },
        {
          "url": "https://git.kernel.org/stable/c/0f6ede9fbc747e2553612271bce108f7517e7a45"
        }
      ],
      "title": "net: defer final \u0027struct net\u0027 free in netns dismantle",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56658",
    "datePublished": "2024-12-27T15:06:21.516Z",
    "dateReserved": "2024-12-27T15:00:39.841Z",
    "dateUpdated": "2026-08-05T11:45:55.213Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-56659",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T20:00:09.932215Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T20:07:10.586Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:52:02.579Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/lapb.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3aa2ef7ffd0451e8f81c249d2a2a68283c6bc700",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "76d856f03d0290cf5392364ecdf74c15ee16b8fd",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "c21c7c1c00bcc60cf752ec491bdfd47693f4d3c7",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "f0949199651bc87c5ed2c12a7323f441f1af6fe9",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "03e661b5e7aa1124f24054df9ab2ee5cb2178973",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "2b351355bbd50ae25d096785b6eb31998d2bf765",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "a6d75ecee2bf828ac6a1b52724aba0a977e4eaf4",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/net/lapb.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.12"
            },
            {
              "lessThan": "2.6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.288",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.232",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.67",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.288",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.232",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.175",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.121",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.67",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.6",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: lapb: increase LAPB_HEADER_LEN\n\nIt is unclear if net/lapb code is supposed to be ready for 8021q.\n\nWe can at least avoid crashes like the following :\n\nskbuff: skb_under_panic: text:ffffffff8aabe1f6 len:24 put:20 head:ffff88802824a400 data:ffff88802824a3fe tail:0x16 end:0x140 dev:nr0.2\n------------[ cut here ]------------\n kernel BUG at net/core/skbuff.c:206 !\nOops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 1 UID: 0 PID: 5508 Comm: dhcpcd Not tainted 6.12.0-rc7-syzkaller-00144-g66418447d27b #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024\n RIP: 0010:skb_panic net/core/skbuff.c:206 [inline]\n RIP: 0010:skb_under_panic+0x14b/0x150 net/core/skbuff.c:216\nCode: 0d 8d 48 c7 c6 2e 9e 29 8e 48 8b 54 24 08 8b 0c 24 44 8b 44 24 04 4d 89 e9 50 41 54 41 57 41 56 e8 1a 6f 37 02 48 83 c4 20 90 \u003c0f\u003e 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3\nRSP: 0018:ffffc90002ddf638 EFLAGS: 00010282\nRAX: 0000000000000086 RBX: dffffc0000000000 RCX: 7a24750e538ff600\nRDX: 0000000000000000 RSI: 0000000000000201 RDI: 0000000000000000\nRBP: ffff888034a86650 R08: ffffffff8174b13c R09: 1ffff920005bbe60\nR10: dffffc0000000000 R11: fffff520005bbe61 R12: 0000000000000140\nR13: ffff88802824a400 R14: ffff88802824a3fe R15: 0000000000000016\nFS:  00007f2a5990d740(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000000110c2631fd CR3: 0000000029504000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n  skb_push+0xe5/0x100 net/core/skbuff.c:2636\n  nr_header+0x36/0x320 net/netrom/nr_dev.c:69\n  dev_hard_header include/linux/netdevice.h:3148 [inline]\n  vlan_dev_hard_header+0x359/0x480 net/8021q/vlan_dev.c:83\n  dev_hard_header include/linux/netdevice.h:3148 [inline]\n  lapbeth_data_transmit+0x1f6/0x2a0 drivers/net/wan/lapbether.c:257\n  lapb_data_transmit+0x91/0xb0 net/lapb/lapb_iface.c:447\n  lapb_transmit_buffer+0x168/0x1f0 net/lapb/lapb_out.c:149\n lapb_establish_data_link+0x84/0xd0\n lapb_device_event+0x4e0/0x670\n  notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93\n __dev_notify_flags+0x207/0x400\n  dev_change_flags+0xf0/0x1a0 net/core/dev.c:8922\n  devinet_ioctl+0xa4e/0x1aa0 net/ipv4/devinet.c:1188\n  inet_ioctl+0x3d7/0x4f0 net/ipv4/af_inet.c:1003\n  sock_do_ioctl+0x158/0x460 net/socket.c:1227\n  sock_ioctl+0x626/0x8e0 net/socket.c:1346\n  vfs_ioctl fs/ioctl.c:51 [inline]\n  __do_sys_ioctl fs/ioctl.c:907 [inline]\n  __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:56:46.030Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3aa2ef7ffd0451e8f81c249d2a2a68283c6bc700"
        },
        {
          "url": "https://git.kernel.org/stable/c/76d856f03d0290cf5392364ecdf74c15ee16b8fd"
        },
        {
          "url": "https://git.kernel.org/stable/c/c21c7c1c00bcc60cf752ec491bdfd47693f4d3c7"
        },
        {
          "url": "https://git.kernel.org/stable/c/f0949199651bc87c5ed2c12a7323f441f1af6fe9"
        },
        {
          "url": "https://git.kernel.org/stable/c/03e661b5e7aa1124f24054df9ab2ee5cb2178973"
        },
        {
          "url": "https://git.kernel.org/stable/c/2b351355bbd50ae25d096785b6eb31998d2bf765"
        },
        {
          "url": "https://git.kernel.org/stable/c/a6d75ecee2bf828ac6a1b52724aba0a977e4eaf4"
        }
      ],
      "title": "net: lapb: increase LAPB_HEADER_LEN",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56659",
    "datePublished": "2024-12-27T15:06:22.298Z",
    "dateReserved": "2024-12-27T15:00:39.841Z",
    "dateUpdated": "2026-05-11T20:56:46.030Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 6,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "HIGH",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-56662",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T19:59:57.981489Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-125",
                "description": "CWE-125 Out-of-bounds Read",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T20:07:10.083Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:52:10.200Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/acpi/nfit/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "616aa5f3c86e0479bcbb81e41c08c43ff32af637",
              "status": "affected",
              "version": "ebe9f6f19d80d8978d16078dff3d5bd93ad8d102",
              "versionType": "git"
            },
            {
              "lessThan": "bbdb3307f609ec4dc9558770f464ede01fe52aed",
              "status": "affected",
              "version": "ebe9f6f19d80d8978d16078dff3d5bd93ad8d102",
              "versionType": "git"
            },
            {
              "lessThan": "143f723e9eb4f0302ffb7adfdc7ef77eab3f68e0",
              "status": "affected",
              "version": "ebe9f6f19d80d8978d16078dff3d5bd93ad8d102",
              "versionType": "git"
            },
            {
              "lessThan": "e08dc2dc3c3f7938df0e4476fe3e6fdec5583c1d",
              "status": "affected",
              "version": "ebe9f6f19d80d8978d16078dff3d5bd93ad8d102",
              "versionType": "git"
            },
            {
              "lessThan": "212846fafb753a48e869e2a342fc1e24048da771",
              "status": "affected",
              "version": "ebe9f6f19d80d8978d16078dff3d5bd93ad8d102",
              "versionType": "git"
            },
            {
              "lessThan": "265e98f72bac6c41a4492d3e30a8e5fd22fe0779",
              "status": "affected",
              "version": "ebe9f6f19d80d8978d16078dff3d5bd93ad8d102",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "63108f2a408abea7ecab063efa0f398da4d0d14b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f5878c4f084dc6b1386dad03970bb61ad5e9dc4b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0c79794474895dbbc3c52225f7e9f73cfecbb7dd",
              "versionType": "git"
            },
            {
              "lessThan": "4.15",
              "status": "affected",
              "version": "4.14.176",
              "versionType": "semver"
            },
            {
              "lessThan": "4.20",
              "status": "affected",
              "version": "4.19.31",
              "versionType": "semver"
            },
            {
              "lessThan": "5.1",
              "status": "affected",
              "version": "5.0.4",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/acpi/nfit/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.1"
            },
            {
              "lessThan": "5.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.232",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.67",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.232",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.175",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.121",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.67",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.6",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.14.176",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.19.31",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.0.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nacpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl\n\nFix an issue detected by syzbot with KASAN:\n\nBUG: KASAN: vmalloc-out-of-bounds in cmd_to_func drivers/acpi/nfit/\ncore.c:416 [inline]\nBUG: KASAN: vmalloc-out-of-bounds in acpi_nfit_ctl+0x20e8/0x24a0\ndrivers/acpi/nfit/core.c:459\n\nThe issue occurs in cmd_to_func when the call_pkg-\u003end_reserved2\narray is accessed without verifying that call_pkg points to a buffer\nthat is appropriately sized as a struct nd_cmd_pkg. This can lead\nto out-of-bounds access and undefined behavior if the buffer does not\nhave sufficient space.\n\nTo address this, a check was added in acpi_nfit_ctl() to ensure that\nbuf is not NULL and that buf_len is less than sizeof(*call_pkg)\nbefore accessing it. This ensures safe access to the members of\ncall_pkg, including the nd_reserved2 array."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is reached exclusively through the `ND_IOCTL_CALL` ioctl on the local libnvdimm character devices `/dev/ndctl%d` or `/dev/nmem%d`, requiring local system access. There is no remote or adjacent-network path into `acpi_nfit_ctl()`.\nAC:L - The attacker fully controls `nd_size_in`/`nd_size_out` in the ioctl payload, and the u32 overflow in `__nd_ioctl()` deterministically produces an undersized `vmalloc()` buffer on every attempt; the OOB read in `cmd_to_func()` occurs unconditionally before any command-mask validation. No race, timing window, or uninfluenceable memory layout is involved.\nPR:L - The entire path from `nd_ioctl()` through `acpi_nfit_ctl()` contains no `capable()` or capability check of any kind \u2014 access is gated only by filesystem permissions on the nvdimm device node plus the `O_RDONLY` rejection, so any account or container granted write access to `/dev/ndctl0`/`/dev/nmem0` (e.g. a delegated pmem-management group or a management container given the device) can trigger it. Since no in-kernel privilege gate exists, this is scored as low privileges rather than real root.\nUI:N - Exploitation is a single self-contained ioctl issued by the attacker\u0027s own process; no victim action, mount, or file open is required.\nS:U - The out-of-bounds access corrupts and discloses kernel memory within the same kernel security authority, and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - The undersized allocation causes reads of up to 40 bytes of stale kernel page data past the allocation (`nd_reserved2` and `nd_fw_size`), and the desynchronized `nd_size_in` is then passed to `acpi_evaluate_dsm()` as a buffer descriptor of attacker-chosen length (up to ~4 GB) pointing into the vmap area, exposing far more than a strictly bounded few bytes.\nI:H - The same undersized-buffer condition yields an out-of-bounds write: `call_pkg-\u003end_fw_size = out_obj-\u003ebuffer.length` writes 4 bytes past the allocation, and `memcpy(call_pkg-\u003end_payload + call_pkg-\u003end_size_in, ...)` writes DSM output to an attacker-controlled offset roughly 4 GB beyond `buf`. An out-of-bounds write with attacker-influenced destination and length is a control-flow-hijack-capable primitive.\nA:H - The OOB access triggers a KASAN BUG on hardened kernels, and on production kernels the ~4 GB buffer length handed to the ACPI interpreter and the wild `memcpy` destination in the vmap region reliably fault, producing a kernel oops or panic. The condition is trivially repeatable."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:45:56.280Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/616aa5f3c86e0479bcbb81e41c08c43ff32af637"
        },
        {
          "url": "https://git.kernel.org/stable/c/bbdb3307f609ec4dc9558770f464ede01fe52aed"
        },
        {
          "url": "https://git.kernel.org/stable/c/143f723e9eb4f0302ffb7adfdc7ef77eab3f68e0"
        },
        {
          "url": "https://git.kernel.org/stable/c/e08dc2dc3c3f7938df0e4476fe3e6fdec5583c1d"
        },
        {
          "url": "https://git.kernel.org/stable/c/212846fafb753a48e869e2a342fc1e24048da771"
        },
        {
          "url": "https://git.kernel.org/stable/c/265e98f72bac6c41a4492d3e30a8e5fd22fe0779"
        }
      ],
      "title": "acpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56662",
    "datePublished": "2024-12-27T15:06:24.661Z",
    "dateReserved": "2024-12-27T15:00:39.843Z",
    "dateUpdated": "2026-08-05T11:45:56.280Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-56670",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T19:59:37.791870Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-476",
                "description": "CWE-476 NULL Pointer Dereference",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T20:07:09.242Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:52:17.369Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/function/u_serial.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4efdfdc32d8d6307f968cd99f1db64468471bab1",
              "status": "affected",
              "version": "c1dca562be8ada614ef193aa246c6f8705bcd6b9",
              "versionType": "git"
            },
            {
              "lessThan": "28b3c03a6790de1f6f2683919ad657840f0f0f58",
              "status": "affected",
              "version": "c1dca562be8ada614ef193aa246c6f8705bcd6b9",
              "versionType": "git"
            },
            {
              "lessThan": "1247e1df086aa6c17ab53cd1bedce70dd7132765",
              "status": "affected",
              "version": "c1dca562be8ada614ef193aa246c6f8705bcd6b9",
              "versionType": "git"
            },
            {
              "lessThan": "c83213b6649d22656b3a4e92544ceeea8a2c6c07",
              "status": "affected",
              "version": "c1dca562be8ada614ef193aa246c6f8705bcd6b9",
              "versionType": "git"
            },
            {
              "lessThan": "8ca07a3d18f39b1669927ef536e485787e856df6",
              "status": "affected",
              "version": "c1dca562be8ada614ef193aa246c6f8705bcd6b9",
              "versionType": "git"
            },
            {
              "lessThan": "dd6b0ca6025f64ccb465a6a3460c5b0307ed9c44",
              "status": "affected",
              "version": "c1dca562be8ada614ef193aa246c6f8705bcd6b9",
              "versionType": "git"
            },
            {
              "lessThan": "4cfbca86f6a8b801f3254e0e3c8f2b1d2d64be2b",
              "status": "affected",
              "version": "c1dca562be8ada614ef193aa246c6f8705bcd6b9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/function/u_serial.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.27"
            },
            {
              "lessThan": "2.6.27",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.288",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.232",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.67",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.288",
                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.232",
                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.175",
                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.121",
                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.67",
                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.6",
                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: u_serial: Fix the issue that gs_start_io crashed due to accessing null pointer\n\nConsidering that in some extreme cases,\nwhen u_serial driver is accessed by multiple threads,\nThread A is executing the open operation and calling the gs_open,\nThread B is executing the disconnect operation and calling the\ngserial_disconnect function,The port-\u003eport_usb pointer will be set to NULL.\n\nE.g.\n    Thread A                                 Thread B\n    gs_open()                                gadget_unbind_driver()\n    gs_start_io()                            composite_disconnect()\n    gs_start_rx()                            gserial_disconnect()\n    ...                                      ...\n    spin_unlock(\u0026port-\u003eport_lock)\n    status = usb_ep_queue()                  spin_lock(\u0026port-\u003eport_lock)\n    spin_lock(\u0026port-\u003eport_lock)              port-\u003eport_usb = NULL\n    gs_free_requests(port-\u003eport_usb-\u003ein)     spin_unlock(\u0026port-\u003eport_lock)\n    Crash\n\nThis causes thread A to access a null pointer (port-\u003eport_usb is null)\nwhen calling the gs_free_requests function, causing a crash.\n\nIf port_usb is NULL, the release request will be skipped as it\nwill be done by gserial_disconnect.\n\nSo add a null pointer check to gs_start_io before attempting\nto access the value of the pointer port-\u003eport_usb.\n\nCall trace:\n gs_start_io+0x164/0x25c\n gs_open+0x108/0x13c\n tty_open+0x314/0x638\n chrdev_open+0x1b8/0x258\n do_dentry_open+0x2c4/0x700\n vfs_open+0x2c/0x3c\n path_openat+0xa64/0xc60\n do_filp_open+0xb8/0x164\n do_sys_openat2+0x84/0xf0\n __arm64_sys_openat+0x70/0x9c\n invoke_syscall+0x58/0x114\n el0_svc_common+0x80/0xe0\n do_el0_svc+0x1c/0x28\n el0_svc+0x38/0x68"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:56:58.889Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4efdfdc32d8d6307f968cd99f1db64468471bab1"
        },
        {
          "url": "https://git.kernel.org/stable/c/28b3c03a6790de1f6f2683919ad657840f0f0f58"
        },
        {
          "url": "https://git.kernel.org/stable/c/1247e1df086aa6c17ab53cd1bedce70dd7132765"
        },
        {
          "url": "https://git.kernel.org/stable/c/c83213b6649d22656b3a4e92544ceeea8a2c6c07"
        },
        {
          "url": "https://git.kernel.org/stable/c/8ca07a3d18f39b1669927ef536e485787e856df6"
        },
        {
          "url": "https://git.kernel.org/stable/c/dd6b0ca6025f64ccb465a6a3460c5b0307ed9c44"
        },
        {
          "url": "https://git.kernel.org/stable/c/4cfbca86f6a8b801f3254e0e3c8f2b1d2d64be2b"
        }
      ],
      "title": "usb: gadget: u_serial: Fix the issue that gs_start_io crashed due to accessing null pointer",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56670",
    "datePublished": "2024-12-27T15:06:31.611Z",
    "dateReserved": "2024-12-27T15:00:39.844Z",
    "dateUpdated": "2026-05-11T20:56:58.889Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-56672",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-10T17:12:31.915249Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-10T17:21:07.331Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:52:20.150Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-12T12:01:24.932Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "block/blk-cgroup.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "83f5a87ee8caa76a917f59912a74d6811f773c67",
              "status": "affected",
              "version": "4308a434e5e08c78676aa66bc626ef78cbef0883",
              "versionType": "git"
            },
            {
              "lessThan": "8a07350fe070017a887433f4d6909433955be5f1",
              "status": "affected",
              "version": "4308a434e5e08c78676aa66bc626ef78cbef0883",
              "versionType": "git"
            },
            {
              "lessThan": "64afc6fe24c9896c0153e5a199bcea241ecb0d5c",
              "status": "affected",
              "version": "4308a434e5e08c78676aa66bc626ef78cbef0883",
              "versionType": "git"
            },
            {
              "lessThan": "5baa28569c924d9a90d036c2aaab79f791fedaf8",
              "status": "affected",
              "version": "4308a434e5e08c78676aa66bc626ef78cbef0883",
              "versionType": "git"
            },
            {
              "lessThan": "29d1e06560f0f6179062ac638b4064deb637d1ad",
              "status": "affected",
              "version": "4308a434e5e08c78676aa66bc626ef78cbef0883",
              "versionType": "git"
            },
            {
              "lessThan": "86e6ca55b83c575ab0f2e105cf08f98e58d3d7af",
              "status": "affected",
              "version": "4308a434e5e08c78676aa66bc626ef78cbef0883",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "block/blk-cgroup.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.234",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.177",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.67",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.234",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.177",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.121",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.67",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.6",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-cgroup: Fix UAF in blkcg_unpin_online()\n\nblkcg_unpin_online() walks up the blkcg hierarchy putting the online pin. To\nwalk up, it uses blkcg_parent(blkcg) but it was calling that after\nblkcg_destroy_blkgs(blkcg) which could free the blkcg, leading to the\nfollowing UAF:\n\n  ==================================================================\n  BUG: KASAN: slab-use-after-free in blkcg_unpin_online+0x15a/0x270\n  Read of size 8 at addr ffff8881057678c0 by task kworker/9:1/117\n\n  CPU: 9 UID: 0 PID: 117 Comm: kworker/9:1 Not tainted 6.13.0-rc1-work-00182-gb8f52214c61a-dirty #48\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS unknown 02/02/2022\n  Workqueue: cgwb_release cgwb_release_workfn\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x27/0x80\n   print_report+0x151/0x710\n   kasan_report+0xc0/0x100\n   blkcg_unpin_online+0x15a/0x270\n   cgwb_release_workfn+0x194/0x480\n   process_scheduled_works+0x71b/0xe20\n   worker_thread+0x82a/0xbd0\n   kthread+0x242/0x2c0\n   ret_from_fork+0x33/0x70\n   ret_from_fork_asm+0x1a/0x30\n   \u003c/TASK\u003e\n  ...\n  Freed by task 1944:\n   kasan_save_track+0x2b/0x70\n   kasan_save_free_info+0x3c/0x50\n   __kasan_slab_free+0x33/0x50\n   kfree+0x10c/0x330\n   css_free_rwork_fn+0xe6/0xb30\n   process_scheduled_works+0x71b/0xe20\n   worker_thread+0x82a/0xbd0\n   kthread+0x242/0x2c0\n   ret_from_fork+0x33/0x70\n   ret_from_fork_asm+0x1a/0x30\n\nNote that the UAF is not easy to trigger as the free path is indirected\nbehind a couple RCU grace periods and a work item execution. I could only\ntrigger it with artifical msleep() injected in blkcg_unpin_online().\n\nFix it by reading the parent pointer before destroying the blkcg\u0027s blkg\u0027s."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is reached only through local operations \u2014 creating/enabling an `io` cgroup, dirtying pages to instantiate a cgroup writeback structure, and rmdir\u0027ing the cgroup. No network-facing code path reaches `blkcg_unpin_online()`.\nAC:L - The attacker drives both sides: the cgwb release that reaches the stale read and the css free chain are both initiated by its own cgroup teardown, and the window is widened at will via `blkcg_destroy_blkgs()`\u0027s `cond_resched()` loop (blkg count, CPU load) while the create/write/rmdir cycle can be repeated indefinitely until the race lands.\nPR:L - An unprivileged user needs only write access to a delegated cgroup v2 subtree with the io controller enabled \u2014 standard under systemd user delegation, container runtimes, and unprivileged podman \u2014 plus ordinary buffered writes; no capability check guards the path.\nUI:N - The attacker performs every step itself \u2014 cgroup creation, file writes, and cgroup removal \u2014 with no victim action required.\nS:U - The corruption occurs in kernel slab memory and impacts the same kernel security authority; no VM, IOMMU, or hypervisor boundary is crossed.\nC:H - `struct blkcg` is allocated from a general kmalloc cache, so the freed object can be sprayed with attacker-controlled data; the stale `css.parent` read produces a controlled pointer that is subsequently dereferenced, giving a path to disclose arbitrary kernel memory.\nI:H - The UAF-derived pointer is fed straight into `refcount_dec_and_test(\u0026blkcg-\u003eonline_pin)` \u2014 an arbitrary decrement \u2014 and into `blkcg_destroy_blkgs()`, which performs hlist unlink writes on the bogus object, yielding write primitives suitable for control-flow hijack and privilege escalation.\nA:H - Even unweaponized, the slab-use-after-free reliably corrupts memory and oopses/panics the kernel, as demonstrated by the reported KASAN splat in a cgwb_release kworker."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:46:00.581Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/83f5a87ee8caa76a917f59912a74d6811f773c67"
        },
        {
          "url": "https://git.kernel.org/stable/c/8a07350fe070017a887433f4d6909433955be5f1"
        },
        {
          "url": "https://git.kernel.org/stable/c/64afc6fe24c9896c0153e5a199bcea241ecb0d5c"
        },
        {
          "url": "https://git.kernel.org/stable/c/5baa28569c924d9a90d036c2aaab79f791fedaf8"
        },
        {
          "url": "https://git.kernel.org/stable/c/29d1e06560f0f6179062ac638b4064deb637d1ad"
        },
        {
          "url": "https://git.kernel.org/stable/c/86e6ca55b83c575ab0f2e105cf08f98e58d3d7af"
        }
      ],
      "title": "blk-cgroup: Fix UAF in blkcg_unpin_online()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56672",
    "datePublished": "2024-12-27T15:06:33.358Z",
    "dateReserved": "2024-12-27T15:00:39.845Z",
    "dateUpdated": "2026-08-05T11:46:00.581Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}