CVE-2024-56372 (GCVE-0-2024-56372)

Vulnerability from cvelistv5 – Published: 2025-01-11 12:35 – Updated: 2026-11-05 20:31
VLAI
Title
net: tun: fix tun_napi_alloc_frags()
Summary
In the Linux kernel, the following vulnerability has been resolved: net: tun: fix tun_napi_alloc_frags() syzbot reported the following crash [1] Issue came with the blamed commit. Instead of going through all the iov components, we keep using the first one and end up with a malformed skb. [1] kernel BUG at net/core/skbuff.c:2849 ! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 6230 Comm: syz-executor132 Not tainted 6.13.0-rc1-syzkaller-00407-g96b6fcc0ee41 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:__pskb_pull_tail+0x1568/0x1570 net/core/skbuff.c:2848 Code: 38 c1 0f 8c 32 f1 ff ff 4c 89 f7 e8 92 96 74 f8 e9 25 f1 ff ff e8 e8 ae 09 f8 48 8b 5c 24 08 e9 eb fb ff ff e8 d9 ae 09 f8 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90004cbef30 EFLAGS: 00010293 RAX: ffffffff8995c347 RBX: 00000000fffffff2 RCX: ffff88802cf45a00 RDX: 0000000000000000 RSI: 00000000fffffff2 RDI: 0000000000000000 RBP: ffff88807df0c06a R08: ffffffff8995b084 R09: 1ffff1100fbe185c R10: dffffc0000000000 R11: ffffed100fbe185d R12: ffff888076e85d50 R13: ffff888076e85c80 R14: ffff888076e85cf4 R15: ffff888076e85c80 FS: 00007f0dca6ea6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0dca6ead58 CR3: 00000000119da000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> skb_cow_data+0x2da/0xcb0 net/core/skbuff.c:5284 tipc_aead_decrypt net/tipc/crypto.c:894 [inline] tipc_crypto_rcv+0x402/0x24e0 net/tipc/crypto.c:1844 tipc_rcv+0x57e/0x12a0 net/tipc/node.c:2109 tipc_l2_rcv_msg+0x2bd/0x450 net/tipc/bearer.c:668 __netif_receive_skb_list_ptype net/core/dev.c:5720 [inline] __netif_receive_skb_list_core+0x8b7/0x980 net/core/dev.c:5762 __netif_receive_skb_list net/core/dev.c:5814 [inline] netif_receive_skb_list_internal+0xa51/0xe30 net/core/dev.c:5905 gro_normal_list include/net/gro.h:515 [inline] napi_complete_done+0x2b5/0x870 net/core/dev.c:6256 napi_complete include/linux/netdevice.h:567 [inline] tun_get_user+0x2ea0/0x4890 drivers/net/tun.c:1982 tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2057 do_iter_readv_writev+0x600/0x880 vfs_writev+0x376/0xba0 fs/read_write.c:1050 do_writev+0x1b6/0x360 fs/read_write.c:1096 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 20:28 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6653 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: de4f5fed3f231a8ff4790bf52975f847b95b85ea , < efe74dd58a72bd987b158142c904b7ef2ad132e2 (git)
Affected: de4f5fed3f231a8ff4790bf52975f847b95b85ea , < 4f393ea1e2f9c3b646d00572dd92c48b1869c65f (git)
Affected: de4f5fed3f231a8ff4790bf52975f847b95b85ea , < 429fde2d81bcef0ebab002215358955704586457 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.6.68 , ≤ 6.6.* (semver)
Unaffected: 6.12.7 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-56372",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-11-05T20:28:43.747141Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-11-05T20:31:23.884Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/tun.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "efe74dd58a72bd987b158142c904b7ef2ad132e2",
              "status": "affected",
              "version": "de4f5fed3f231a8ff4790bf52975f847b95b85ea",
              "versionType": "git"
            },
            {
              "lessThan": "4f393ea1e2f9c3b646d00572dd92c48b1869c65f",
              "status": "affected",
              "version": "de4f5fed3f231a8ff4790bf52975f847b95b85ea",
              "versionType": "git"
            },
            {
              "lessThan": "429fde2d81bcef0ebab002215358955704586457",
              "status": "affected",
              "version": "de4f5fed3f231a8ff4790bf52975f847b95b85ea",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/tun.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.68",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.7",
              "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": "6.6.68",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.7",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: tun: fix tun_napi_alloc_frags()\n\nsyzbot reported the following crash [1]\n\nIssue came with the blamed commit. Instead of going through\nall the iov components, we keep using the first one\nand end up with a malformed skb.\n\n[1]\n\nkernel BUG at net/core/skbuff.c:2849 !\nOops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 0 UID: 0 PID: 6230 Comm: syz-executor132 Not tainted 6.13.0-rc1-syzkaller-00407-g96b6fcc0ee41 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024\n RIP: 0010:__pskb_pull_tail+0x1568/0x1570 net/core/skbuff.c:2848\nCode: 38 c1 0f 8c 32 f1 ff ff 4c 89 f7 e8 92 96 74 f8 e9 25 f1 ff ff e8 e8 ae 09 f8 48 8b 5c 24 08 e9 eb fb ff ff e8 d9 ae 09 f8 90 \u003c0f\u003e 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90\nRSP: 0018:ffffc90004cbef30 EFLAGS: 00010293\nRAX: ffffffff8995c347 RBX: 00000000fffffff2 RCX: ffff88802cf45a00\nRDX: 0000000000000000 RSI: 00000000fffffff2 RDI: 0000000000000000\nRBP: ffff88807df0c06a R08: ffffffff8995b084 R09: 1ffff1100fbe185c\nR10: dffffc0000000000 R11: ffffed100fbe185d R12: ffff888076e85d50\nR13: ffff888076e85c80 R14: ffff888076e85cf4 R15: ffff888076e85c80\nFS:  00007f0dca6ea6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f0dca6ead58 CR3: 00000000119da000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n  skb_cow_data+0x2da/0xcb0 net/core/skbuff.c:5284\n  tipc_aead_decrypt net/tipc/crypto.c:894 [inline]\n  tipc_crypto_rcv+0x402/0x24e0 net/tipc/crypto.c:1844\n  tipc_rcv+0x57e/0x12a0 net/tipc/node.c:2109\n  tipc_l2_rcv_msg+0x2bd/0x450 net/tipc/bearer.c:668\n  __netif_receive_skb_list_ptype net/core/dev.c:5720 [inline]\n  __netif_receive_skb_list_core+0x8b7/0x980 net/core/dev.c:5762\n  __netif_receive_skb_list net/core/dev.c:5814 [inline]\n  netif_receive_skb_list_internal+0xa51/0xe30 net/core/dev.c:5905\n  gro_normal_list include/net/gro.h:515 [inline]\n  napi_complete_done+0x2b5/0x870 net/core/dev.c:6256\n  napi_complete include/linux/netdevice.h:567 [inline]\n  tun_get_user+0x2ea0/0x4890 drivers/net/tun.c:1982\n  tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2057\n do_iter_readv_writev+0x600/0x880\n  vfs_writev+0x376/0xba0 fs/read_write.c:1050\n  do_writev+0x1b6/0x360 fs/read_write.c:1096\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:54:00.801Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/efe74dd58a72bd987b158142c904b7ef2ad132e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/4f393ea1e2f9c3b646d00572dd92c48b1869c65f"
        },
        {
          "url": "https://git.kernel.org/stable/c/429fde2d81bcef0ebab002215358955704586457"
        }
      ],
      "title": "net: tun: fix tun_napi_alloc_frags()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56372",
    "datePublished": "2025-01-11T12:35:47.256Z",
    "dateReserved": "2025-01-11T12:34:02.635Z",
    "dateUpdated": "2026-11-05T20:31:23.884Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-56372",
      "date": "2026-11-08",
      "epss": "0.00247",
      "percentile": "0.16089"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/net/tun.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "efe74dd58a72bd987b158142c904b7ef2ad132e2",
                    "status": "affected",
                    "version": "de4f5fed3f231a8ff4790bf52975f847b95b85ea",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "4f393ea1e2f9c3b646d00572dd92c48b1869c65f",
                    "status": "affected",
                    "version": "de4f5fed3f231a8ff4790bf52975f847b95b85ea",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "429fde2d81bcef0ebab002215358955704586457",
                    "status": "affected",
                    "version": "de4f5fed3f231a8ff4790bf52975f847b95b85ea",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/net/tun.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.4"
                  },
                  {
                    "lessThan": "6.4",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.68",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.7",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.13",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DA073B86-58FC-4698-B82C-6B0561369002",
                    "versionEndExcluding": "6.6.68",
                    "versionStartIncluding": "6.4",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "811AC89A-14AC-49FA-9B54-E99526F1CA47",
                    "versionEndExcluding": "6.12.7",
                    "versionStartIncluding": "6.7",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*",
                    "matchCriteriaId": "62567B3C-6CEE-46D0-BC2E-B3717FBF7D13",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*",
                    "matchCriteriaId": "5A073481-106D-4B15-B4C7-FB0213B8E1D4",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*",
                    "matchCriteriaId": "DE491969-75AE-4A6B-9A58-8FC5AF98798F",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: tun: fix tun_napi_alloc_frags()\n\nsyzbot reported the following crash [1]\n\nIssue came with the blamed commit. Instead of going through\nall the iov components, we keep using the first one\nand end up with a malformed skb.\n\n[1]\n\nkernel BUG at net/core/skbuff.c:2849 !\nOops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 0 UID: 0 PID: 6230 Comm: syz-executor132 Not tainted 6.13.0-rc1-syzkaller-00407-g96b6fcc0ee41 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024\n RIP: 0010:__pskb_pull_tail+0x1568/0x1570 net/core/skbuff.c:2848\nCode: 38 c1 0f 8c 32 f1 ff ff 4c 89 f7 e8 92 96 74 f8 e9 25 f1 ff ff e8 e8 ae 09 f8 48 8b 5c 24 08 e9 eb fb ff ff e8 d9 ae 09 f8 90 \u003c0f\u003e 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90\nRSP: 0018:ffffc90004cbef30 EFLAGS: 00010293\nRAX: ffffffff8995c347 RBX: 00000000fffffff2 RCX: ffff88802cf45a00\nRDX: 0000000000000000 RSI: 00000000fffffff2 RDI: 0000000000000000\nRBP: ffff88807df0c06a R08: ffffffff8995b084 R09: 1ffff1100fbe185c\nR10: dffffc0000000000 R11: ffffed100fbe185d R12: ffff888076e85d50\nR13: ffff888076e85c80 R14: ffff888076e85cf4 R15: ffff888076e85c80\nFS:  00007f0dca6ea6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f0dca6ead58 CR3: 00000000119da000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n  skb_cow_data+0x2da/0xcb0 net/core/skbuff.c:5284\n  tipc_aead_decrypt net/tipc/crypto.c:894 [inline]\n  tipc_crypto_rcv+0x402/0x24e0 net/tipc/crypto.c:1844\n  tipc_rcv+0x57e/0x12a0 net/tipc/node.c:2109\n  tipc_l2_rcv_msg+0x2bd/0x450 net/tipc/bearer.c:668\n  __netif_receive_skb_list_ptype net/core/dev.c:5720 [inline]\n  __netif_receive_skb_list_core+0x8b7/0x980 net/core/dev.c:5762\n  __netif_receive_skb_list net/core/dev.c:5814 [inline]\n  netif_receive_skb_list_internal+0xa51/0xe30 net/core/dev.c:5905\n  gro_normal_list include/net/gro.h:515 [inline]\n  napi_complete_done+0x2b5/0x870 net/core/dev.c:6256\n  napi_complete include/linux/netdevice.h:567 [inline]\n  tun_get_user+0x2ea0/0x4890 drivers/net/tun.c:1982\n  tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2057\n do_iter_readv_writev+0x600/0x880\n  vfs_writev+0x376/0xba0 fs/read_write.c:1050\n  do_writev+0x1b6/0x360 fs/read_write.c:1096\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: tun: fix tun_napi_alloc_frags() syzbot inform\u00f3 del siguiente fallo [1] El problema surgi\u00f3 con la confirmaci\u00f3n criticada. En lugar de pasar por todos los componentes de iov, seguimos usando el primero y terminamos con un skb mal formado. [1] \u00a1ERROR del kernel en net/core/skbuff.c:2849! Oops: c\u00f3digo de operaci\u00f3n no v\u00e1lido: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 6230 Comm: syz-executor132 No contaminado 6.13.0-rc1-syzkaller-00407-g96b6fcc0ee41 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 25/11/2024 RIP: 0010:__pskb_pull_tail+0x1568/0x1570 net/core/skbuff.c:2848 C\u00f3digo: 38 c1 0f 8c 32 f1 ff ff 4c 89 f7 e8 92 96 74 f8 e9 25 f1 ff ff e8 e8 ae 09 f8 48 8b 5c 24 08 e9 eb fb ff ff e8 d9 ae 09 f8 90 \u0026lt;0f\u0026gt; 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90004cbef30 EFLAGS: 00010293 RAX: ffffffff8995c347 RBX: 00000000ffffff2 RCX: ffff88802cf45a00 RDX: 000000000000000 RSI: 00000000ffffff2 RDI: 000000000000000 RBP: ffff88807df0c06a R08: ffffffff8995b084 R09: 1ffff1100fbe185c R10: dffffc0000000000 R11: ffffed100fbe185d R12: ffff888076e85d50 R13: ffff888076e85c80 R14: ffff888076e85cf4 R15: ffff888076e85c80 FS: 00007f0dca6ea6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0dca6ead58 CR3: 00000000119da000 CR4: 000000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Seguimiento de llamadas:  skb_cow_data+0x2da/0xcb0 net/core/skbuff.c:5284 tipc_aead_decrypt net/tipc/crypto.c:894 [en l\u00ednea] tipc_crypto_rcv+0x402/0x24e0 net/tipc/crypto.c:1844 tipc_rcv+0x57e/0x12a0 net/tipc/node.c:2109 tipc_l2_rcv_msg+0x2bd/0x450 net/tipc/bearer.c:668 __netif_receive_skb_list_ptype net/core/dev.c:5720 [en l\u00ednea] __netif_receive_skb_list_core+0x8b7/0x980 net/core/dev.c:5762 __netif_receive_skb_list net/core/dev.c:5814 [en l\u00ednea] netif_receive_skb_list_internal+0xa51/0xe30 net/core/dev.c:5905 gro_normal_list include/net/gro.h:515 [en l\u00ednea] napi_complete_done+0x2b5/0x870 net/core/dev.c:6256 napi_complete include/linux/netdevice.h:567 [en l\u00ednea] tun_get_user+0x2ea0/0x4890 drivers/net/tun.c:1982 tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2057 do_iter_readv_writev+0x600/0x880 vfs_writev+0x376/0xba0 fs/read_write.c:1050 do_writev+0x1b6/0x360 fs/lectura_escritura.c:1096 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f"
          }
        ],
        "id": "CVE-2024-56372",
        "lastModified": "2026-11-05T21:17:35.287",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "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"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2024-56372",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-11-05T20:28:43.747141Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2025-01-11T13:15:28.873",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/429fde2d81bcef0ebab002215358955704586457"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/4f393ea1e2f9c3b646d00572dd92c48b1869c65f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/efe74dd58a72bd987b158142c904b7ef2ad132e2"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-476"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-11-06T14:37:04+00:00",
      "cve": "CVE-2024-56372",
      "id": "CVE-2024-56372",
      "initial_release_date": "2024-01-01T00:00:00+00:00",
      "product_status:known_affected": "151",
      "product_status:known_not_affected": "48",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: tun: fix tun_napi_alloc_frags()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-56372.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-56372",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-11-05T20:28:43.747141Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-11-05T20:28:44.674Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/net/tun.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "efe74dd58a72bd987b158142c904b7ef2ad132e2",
                  "status": "affected",
                  "version": "de4f5fed3f231a8ff4790bf52975f847b95b85ea",
                  "versionType": "git"
                },
                {
                  "lessThan": "4f393ea1e2f9c3b646d00572dd92c48b1869c65f",
                  "status": "affected",
                  "version": "de4f5fed3f231a8ff4790bf52975f847b95b85ea",
                  "versionType": "git"
                },
                {
                  "lessThan": "429fde2d81bcef0ebab002215358955704586457",
                  "status": "affected",
                  "version": "de4f5fed3f231a8ff4790bf52975f847b95b85ea",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/net/tun.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "6.4"
                },
                {
                  "lessThan": "6.4",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.68",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.7",
                  "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": "6.6.68",
                      "versionStartIncluding": "6.4",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.7",
                      "versionStartIncluding": "6.4",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.13",
                      "versionStartIncluding": "6.4",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: tun: fix tun_napi_alloc_frags()\n\nsyzbot reported the following crash [1]\n\nIssue came with the blamed commit. Instead of going through\nall the iov components, we keep using the first one\nand end up with a malformed skb.\n\n[1]\n\nkernel BUG at net/core/skbuff.c:2849 !\nOops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 0 UID: 0 PID: 6230 Comm: syz-executor132 Not tainted 6.13.0-rc1-syzkaller-00407-g96b6fcc0ee41 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024\n RIP: 0010:__pskb_pull_tail+0x1568/0x1570 net/core/skbuff.c:2848\nCode: 38 c1 0f 8c 32 f1 ff ff 4c 89 f7 e8 92 96 74 f8 e9 25 f1 ff ff e8 e8 ae 09 f8 48 8b 5c 24 08 e9 eb fb ff ff e8 d9 ae 09 f8 90 \u003c0f\u003e 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90\nRSP: 0018:ffffc90004cbef30 EFLAGS: 00010293\nRAX: ffffffff8995c347 RBX: 00000000fffffff2 RCX: ffff88802cf45a00\nRDX: 0000000000000000 RSI: 00000000fffffff2 RDI: 0000000000000000\nRBP: ffff88807df0c06a R08: ffffffff8995b084 R09: 1ffff1100fbe185c\nR10: dffffc0000000000 R11: ffffed100fbe185d R12: ffff888076e85d50\nR13: ffff888076e85c80 R14: ffff888076e85cf4 R15: ffff888076e85c80\nFS:  00007f0dca6ea6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f0dca6ead58 CR3: 00000000119da000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n  skb_cow_data+0x2da/0xcb0 net/core/skbuff.c:5284\n  tipc_aead_decrypt net/tipc/crypto.c:894 [inline]\n  tipc_crypto_rcv+0x402/0x24e0 net/tipc/crypto.c:1844\n  tipc_rcv+0x57e/0x12a0 net/tipc/node.c:2109\n  tipc_l2_rcv_msg+0x2bd/0x450 net/tipc/bearer.c:668\n  __netif_receive_skb_list_ptype net/core/dev.c:5720 [inline]\n  __netif_receive_skb_list_core+0x8b7/0x980 net/core/dev.c:5762\n  __netif_receive_skb_list net/core/dev.c:5814 [inline]\n  netif_receive_skb_list_internal+0xa51/0xe30 net/core/dev.c:5905\n  gro_normal_list include/net/gro.h:515 [inline]\n  napi_complete_done+0x2b5/0x870 net/core/dev.c:6256\n  napi_complete include/linux/netdevice.h:567 [inline]\n  tun_get_user+0x2ea0/0x4890 drivers/net/tun.c:1982\n  tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2057\n do_iter_readv_writev+0x600/0x880\n  vfs_writev+0x376/0xba0 fs/read_write.c:1050\n  do_writev+0x1b6/0x360 fs/read_write.c:1096\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f"
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T20:54:00.801Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/efe74dd58a72bd987b158142c904b7ef2ad132e2"
            },
            {
              "url": "https://git.kernel.org/stable/c/4f393ea1e2f9c3b646d00572dd92c48b1869c65f"
            },
            {
              "url": "https://git.kernel.org/stable/c/429fde2d81bcef0ebab002215358955704586457"
            }
          ],
          "title": "net: tun: fix tun_napi_alloc_frags()",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-56372",
        "datePublished": "2025-01-11T12:35:47.256Z",
        "dateReserved": "2025-01-11T12:34:02.635Z",
        "dateUpdated": "2026-11-05T20:31:23.884Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.