{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/netfilter/nf_queue.h",
            "net/netfilter/nfnetlink_queue.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "79b713ef4261a8ead96af4703f89d0b5f25532e2",
              "status": "affected",
              "version": "7d8dc1c7be8d3509e8f5164dd5df64c8e34d7eeb",
              "versionType": "git"
            },
            {
              "lessThan": "23901aa6b8a2f294c4b774436b4691f3ff863a8f",
              "status": "affected",
              "version": "7d8dc1c7be8d3509e8f5164dd5df64c8e34d7eeb",
              "versionType": "git"
            },
            {
              "lessThan": "b740e7ddd7ca0dbfeafca3f5e52717206cf28524",
              "status": "affected",
              "version": "7d8dc1c7be8d3509e8f5164dd5df64c8e34d7eeb",
              "versionType": "git"
            },
            {
              "lessThan": "207b3ebacb6113acaaec0d171d5307032c690004",
              "status": "affected",
              "version": "7d8dc1c7be8d3509e8f5164dd5df64c8e34d7eeb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6c4a0ba674f410ab99a30a16f32dac0ebfed5cd3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6dcc8ba8a6074bb79040f502dc66ad23a58a1c86",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "74e6eb7fd27ef1ccc68041dbc66e6d80d2e4a1a0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "025b3326c5c409b372d0103ad30f174e55adbd1b",
              "versionType": "git"
            },
            {
              "lessThan": "5.16",
              "status": "affected",
              "version": "5.15.166",
              "versionType": "semver"
            },
            {
              "lessThan": "6.2",
              "status": "affected",
              "version": "6.1.107",
              "versionType": "semver"
            },
            {
              "lessThan": "6.7",
              "status": "affected",
              "version": "6.6.48",
              "versionType": "semver"
            },
            {
              "lessThan": "6.11",
              "status": "affected",
              "version": "6.10.7",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/net/netfilter/nf_queue.h",
            "net/netfilter/nfnetlink_queue.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.14",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.4",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.15.166",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.1.107",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.6.48",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.10.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_queue: do shared-unconfirmed check before segmentation\n\nUlrich reports a regression with nfqueue:\n\nIf an application did not set the \u0027F_GSO\u0027 capability flag and a gso\npacket with an unconfirmed nf_conn entry is received all packets are\nnow dropped instead of queued, because the check happens after\nskb_gso_segment().  In that case, we did have exclusive ownership\nof the skb and its associated conntrack entry.  The elevated use\ncount is due to skb_clone happening via skb_gso_segment().\n\nMove the check so that its peformed vs. the aggregated packet.\n\nThen, annotate the individual segments except the first one so we\ncan do a 2nd check at reinject time.\n\nFor the normal case, where userspace does in-order reinjects, this avoids\npacket drops: first reinjected segment continues traversal and confirms\nentry, remaining segments observe the confirmed entry.\n\nWhile at it, simplify nf_ct_drop_unconfirmed(): We only care about\nunconfirmed entries with a refcnt \u003e 1, there is no need to special-case\ndying entries.\n\nThis only happens with UDP.  With TCP, the only unconfirmed packet will\nbe the TCP SYN, those aren\u0027t aggregated by GRO.\n\nNext patch adds a udpgro test case to cover this scenario."
        }
      ],
      "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 vulnerable nfnetlink_queue path processes packets that hit an NFQUEUE netfilter verdict; GRO-aggregated UDP traffic received from the network reaches it, so the dropping condition is triggered by remote network packets.\nAC:L - Once an nfqueue without F_GSO exists, an attacker reliably triggers the drop by sending a UDP burst that GRO coalesces into a GSO skb for a new (unconfirmed) flow; no uncontrollable condition is required.\nPR:N - Triggering the condition requires only sending network traffic to the host; no authentication or privileges are needed by the remote sender.\nUI:N - The packet drop occurs automatically during kernel packet processing with no victim interaction.\nS:U - The impact is confined to the kernel\u0027s own network packet processing; no security boundary is crossed.\nC:N - The bug only causes packets to be dropped; no kernel memory is read or disclosed.\nI:N - No data is modified or written; dropped packets are simply not delivered, which is an availability rather than integrity effect.\nA:H - All GSO-aggregated UDP packets of new (unconfirmed) conntrack flows are dropped on a non-F_GSO nfqueue, denying establishment/processing of those new flows \u2014 a sustained, network-triggerable denial of that traffic class."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:28:30.933Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/79b713ef4261a8ead96af4703f89d0b5f25532e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/23901aa6b8a2f294c4b774436b4691f3ff863a8f"
        },
        {
          "url": "https://git.kernel.org/stable/c/b740e7ddd7ca0dbfeafca3f5e52717206cf28524"
        },
        {
          "url": "https://git.kernel.org/stable/c/207b3ebacb6113acaaec0d171d5307032c690004"
        }
      ],
      "title": "netfilter: nfnetlink_queue: do shared-unconfirmed check before segmentation",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45859",
    "datePublished": "2026-05-27T12:15:39.322Z",
    "dateReserved": "2026-05-13T15:03:33.079Z",
    "dateUpdated": "2026-08-05T12:28:30.933Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sched/act_ct.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ece578ca61e572df96cfc80456357ebfae0b4b9e",
              "status": "affected",
              "version": "138470a9b2cc2e26e6018300394afc3858a54e6a",
              "versionType": "git"
            },
            {
              "lessThan": "a2e0c045c87aa252eb61412e67dd91f2c2b19f81",
              "status": "affected",
              "version": "138470a9b2cc2e26e6018300394afc3858a54e6a",
              "versionType": "git"
            },
            {
              "lessThan": "67c9ecc9f2575273ed1323e312881fc98ac83d6d",
              "status": "affected",
              "version": "138470a9b2cc2e26e6018300394afc3858a54e6a",
              "versionType": "git"
            },
            {
              "lessThan": "f23424a0ddadb494d4bd57056a7ca703312d3a7b",
              "status": "affected",
              "version": "138470a9b2cc2e26e6018300394afc3858a54e6a",
              "versionType": "git"
            },
            {
              "lessThan": "17dfb67cb399b660105d9a8c6100851c0d0cdc70",
              "status": "affected",
              "version": "138470a9b2cc2e26e6018300394afc3858a54e6a",
              "versionType": "git"
            },
            {
              "lessThan": "4c727c6967a41b37efe0f26332ca9ec5b74785a3",
              "status": "affected",
              "version": "138470a9b2cc2e26e6018300394afc3858a54e6a",
              "versionType": "git"
            },
            {
              "lessThan": "3e20e1b3058e0b94638e7b931c138e840e266724",
              "status": "affected",
              "version": "138470a9b2cc2e26e6018300394afc3858a54e6a",
              "versionType": "git"
            },
            {
              "lessThan": "f462dca0c8415bf0058d0ffa476354c4476d0f09",
              "status": "affected",
              "version": "138470a9b2cc2e26e6018300394afc3858a54e6a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/sched/act_ct.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": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.258",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.141",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.91",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.33",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.10",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_ct: Only release RCU read lock after ct_ft\n\nWhen looking up a flow table in act_ct in tcf_ct_flow_table_get(),\nrhashtable_lookup_fast() internally opens and closes an RCU read critical\nsection before returning ct_ft.\nThe tcf_ct_flow_table_cleanup_work() can complete before refcount_inc_not_zero()\nis invoked on the returned ct_ft resulting in a UAF on the already freed ct_ft\nobject. This vulnerability can lead to privilege escalation.\n\nAnalysis from zdi-disclosures@trendmicro.com:\nWhen initializing act_ct, tcf_ct_init() is called, which internally triggers\ntcf_ct_flow_table_get().\n\nstatic int tcf_ct_flow_table_get(struct net *net, struct tcf_ct_params *params)\n\n{\n                struct zones_ht_key key = { .net = net, .zone = params-\u003ezone };\n                struct tcf_ct_flow_table *ct_ft;\n                int err = -ENOMEM;\n\n                mutex_lock(\u0026zones_mutex);\n                ct_ft = rhashtable_lookup_fast(\u0026zones_ht, \u0026key, zones_params); // [1]\n                if (ct_ft \u0026\u0026 refcount_inc_not_zero(\u0026ct_ft-\u003eref)) // [2]\n                                goto out_unlock;\n                ...\n}\n\nstatic __always_inline void *rhashtable_lookup_fast(\n                struct rhashtable *ht, const void *key,\n                const struct rhashtable_params params)\n{\n                void *obj;\n\n                rcu_read_lock();\n                obj = rhashtable_lookup(ht, key, params);\n                rcu_read_unlock();\n\n                return obj;\n}\n\nAt [1], rhashtable_lookup_fast() looks up and returns the corresponding ct_ft\nfrom zones_ht . The lookup is performed within an RCU read critical section\nthrough rcu_read_lock() / rcu_read_unlock(), which prevents the object from\nbeing freed. However, at the point of function return, rcu_read_unlock() has\nalready been called, and there is nothing preventing ct_ft from being freed\nbefore reaching refcount_inc_not_zero(\u0026ct_ft-\u003eref) at [2]. This interval becomes\nthe race window, during which ct_ft can be freed.\n\nFree Process:\n\ntcf_ct_flow_table_put() is executed through the path tcf_ct_cleanup() call_rcu()\ntcf_ct_params_free_rcu() tcf_ct_params_free() tcf_ct_flow_table_put().\n\nstatic void tcf_ct_flow_table_put(struct tcf_ct_flow_table *ct_ft)\n{\n                if (refcount_dec_and_test(\u0026ct_ft-\u003eref)) {\n                                rhashtable_remove_fast(\u0026zones_ht, \u0026ct_ft-\u003enode, zones_params);\n                                INIT_RCU_WORK(\u0026ct_ft-\u003erwork, tcf_ct_flow_table_cleanup_work); // [3]\n                                queue_rcu_work(act_ct_wq, \u0026ct_ft-\u003erwork);\n                }\n}\n\nAt [3], tcf_ct_flow_table_cleanup_work() is scheduled as RCU work\n\nstatic void tcf_ct_flow_table_cleanup_work(struct work_struct *work)\n\n{\n                struct tcf_ct_flow_table *ct_ft;\n                struct flow_block *block;\n\n                ct_ft = container_of(to_rcu_work(work), struct tcf_ct_flow_table,\n                                                                rwork);\n                nf_flow_table_free(\u0026ct_ft-\u003enf_ft);\n                block = \u0026ct_ft-\u003enf_ft.flow_block;\n                down_write(\u0026ct_ft-\u003enf_ft.flow_block_lock);\n                WARN_ON(!list_empty(\u0026block-\u003ecb_list));\n                up_write(\u0026ct_ft-\u003enf_ft.flow_block_lock);\n                kfree(ct_ft); // [4]\n\n                module_put(THIS_MODULE);\n}\n\ntcf_ct_flow_table_cleanup_work() frees ct_ft at [4]. When this function executes\nbetween [1] and [2], UAF occurs.\n\nThis race condition has a very short race window, making it generally\ndifficult to trigger. Therefore, to trigger the vulnerability an msleep(100) was\ninserted after[1]"
        }
      ],
      "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 UAF is triggered only during act_ct TC action configuration via RTM_NEWACTION/RTM_DELACTION or RTM_NEWTFILTER netlink messages, not by processing remote network packets. Per kernel guidance, tc/netlink qdisc paths are Local attack vector.\nAC:L - The race is between flow-table lookup and refcount increment during concurrent create/delete/replace of ct actions, and an attacker with CAP_NET_ADMIN controls both sides by issuing parallel netlink operations on actions sharing the same zone. UAF races where the attacker controls timing are scored AC:L.\nPR:L - All non-GET rtnetlink TC operations require CAP_NET_ADMIN, checked in rtnetlink_rcv_msg() and tc_ctl_action(). CAP_NET_ADMIN is obtainable by an unprivileged user inside a user+network namespace (unshare -Urn), which per kernel guidance is PR:L not PR:H.\nUI:N - Exploitation requires only the attacker\u0027s own netlink configuration traffic; no victim user action such as opening a file or mounting a filesystem is needed.\nS:U - A successful exploit yields kernel-level privilege escalation within the same kernel security domain. This is standard local kernel compromise, not a cross-boundary escape such as VM guest-to-host or IOMMU bypass.\nC:H - The bug is a heap use-after-free on struct tcf_ct_flow_table during refcount_inc_not_zero() on memory that tcf_ct_flow_table_cleanup_work() may have already kfree()\u0027d. UAF on kernel heap objects enables arbitrary memory read primitives and is scored C:H.\nI:H - Freed tcf_ct_flow_table slabs can be reallocated and corrupted via the dangling refcount operation, providing heap manipulation primitives that ZDI and the fix commit describe as leading to privilege escalation. Memory corruption UAF is scored I:H.\nA:H - Hitting the UAF during refcount manipulation on freed memory can cause kernel oops/panic or deliberate denial of service, and UAF bugs inherently threaten availability even when exploitation is attempted. Any kernel crash or UAF is scored A:H."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:31:14.097Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ece578ca61e572df96cfc80456357ebfae0b4b9e"
        },
        {
          "url": "https://git.kernel.org/stable/c/a2e0c045c87aa252eb61412e67dd91f2c2b19f81"
        },
        {
          "url": "https://git.kernel.org/stable/c/67c9ecc9f2575273ed1323e312881fc98ac83d6d"
        },
        {
          "url": "https://git.kernel.org/stable/c/f23424a0ddadb494d4bd57056a7ca703312d3a7b"
        },
        {
          "url": "https://git.kernel.org/stable/c/17dfb67cb399b660105d9a8c6100851c0d0cdc70"
        },
        {
          "url": "https://git.kernel.org/stable/c/4c727c6967a41b37efe0f26332ca9ec5b74785a3"
        },
        {
          "url": "https://git.kernel.org/stable/c/3e20e1b3058e0b94638e7b931c138e840e266724"
        },
        {
          "url": "https://git.kernel.org/stable/c/f462dca0c8415bf0058d0ffa476354c4476d0f09"
        }
      ],
      "title": "net/sched: act_ct: Only release RCU read lock after ct_ft",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46319",
    "datePublished": "2026-06-09T12:11:12.128Z",
    "dateReserved": "2026-05-13T15:03:33.112Z",
    "dateUpdated": "2026-08-05T12:31:14.097Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sched/sch_taprio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a8fc396519ef4f081bc545e88f61241728bb78d7",
              "status": "affected",
              "version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
              "versionType": "git"
            },
            {
              "lessThan": "3471874578160a28c171a607fa069f24062634b8",
              "status": "affected",
              "version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
              "versionType": "git"
            },
            {
              "lessThan": "7256996e1ef553716817f3bfd077c2f3b48b582f",
              "status": "affected",
              "version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
              "versionType": "git"
            },
            {
              "lessThan": "eee072fe16c646190d33ae69c9983d8de1562bf8",
              "status": "affected",
              "version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
              "versionType": "git"
            },
            {
              "lessThan": "1bd286fa3e21200133478ed523cc6a2788baf38a",
              "status": "affected",
              "version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
              "versionType": "git"
            },
            {
              "lessThan": "b73235da5dde77ed1264f9767b62c28c9d71fd78",
              "status": "affected",
              "version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
              "versionType": "git"
            },
            {
              "lessThan": "0e62171df8ed4804d00db088f17eed06468233fa",
              "status": "affected",
              "version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
              "versionType": "git"
            },
            {
              "lessThan": "105425b1969c5affe532713cfac1c0b320d7ac2b",
              "status": "affected",
              "version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/sched/sch_taprio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.2"
            },
            {
              "lessThan": "5.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.258",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.141",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.91",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.33",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.10",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: taprio: fix use-after-free in advance_sched() on schedule switch\n\nIn advance_sched(), when should_change_schedules() returns true,\nswitch_schedules() is called to promote the admin schedule to oper.\nswitch_schedules() queues the old oper schedule for RCU freeing via\ncall_rcu(), but \u0027next\u0027 still points into an entry of the old oper\nschedule. The subsequent \u0027next-\u003eend_time = end_time\u0027 and\nrcu_assign_pointer(q-\u003ecurrent_entry, next) are use-after-free.\n\nFix this by selecting \u0027next\u0027 from the new oper schedule immediately\nafter switch_schedules(), and using its pre-calculated end_time.\nsetup_first_end_time() sets the first entry\u0027s end_time to\nbase_time + interval when the schedule is installed, so the value\nis already correct.\n\nThe deleted \u0027end_time = sched_base_time(admin)\u0027 assignment was also\nharmful independently: it would overwrite the new first entry\u0027s\npre-calculated end_time with just base_time."
        }
      ],
      "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 vulnerable taprio schedule switch is reached through local `NETLINK_ROUTE`/tc qdisc configuration, not by unauthenticated network packets. An attacker sends `RTM_NEWQDISC` messages to install and later switch taprio schedules.\nAC:L - The trigger is deterministic once the attacker installs an oper schedule and a later admin schedule with chosen base times/intervals. The attacker controls the schedule timing, so no condition beyond attacker control is required.\nPR:L - The rtnetlink qdisc path requires `CAP_NET_ADMIN` in the target network namespace. Because tc/qdisc configuration is reachable with namespaced `CAP_NET_ADMIN` via user namespaces in reasonable deployments, this is low privilege rather than high privilege.\nUI:N - No victim action is required after the attacker can issue the local netlink configuration. The hrtimer-driven schedule transition occurs automatically.\nS:U - The vulnerability corrupts kernel memory within the same kernel security authority. It is a standard local kernel privilege-escalation/DoS class issue, not a VM or hardware boundary escape.\nC:H - This is a use-after-free of taprio schedule entry memory that leaves `current_entry` pointing into freed objects. As a kernel UAF, it can plausibly be shaped into memory disclosure primitives.\nI:H - The stale schedule entry is later written and used by scheduler/dequeue paths, giving attacker-influenced heap corruption potential. Under the required kernel guidance, a UAF is high integrity impact because it can be leveraged for arbitrary write or control-flow compromise.\nA:H - The dangling schedule entry can be dereferenced after RCU freeing by the timer or dequeue path. Even without full exploitation, this can cause kernel oops, panic, or repeated crashes."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:32:38.643Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a8fc396519ef4f081bc545e88f61241728bb78d7"
        },
        {
          "url": "https://git.kernel.org/stable/c/3471874578160a28c171a607fa069f24062634b8"
        },
        {
          "url": "https://git.kernel.org/stable/c/7256996e1ef553716817f3bfd077c2f3b48b582f"
        },
        {
          "url": "https://git.kernel.org/stable/c/eee072fe16c646190d33ae69c9983d8de1562bf8"
        },
        {
          "url": "https://git.kernel.org/stable/c/1bd286fa3e21200133478ed523cc6a2788baf38a"
        },
        {
          "url": "https://git.kernel.org/stable/c/b73235da5dde77ed1264f9767b62c28c9d71fd78"
        },
        {
          "url": "https://git.kernel.org/stable/c/0e62171df8ed4804d00db088f17eed06468233fa"
        },
        {
          "url": "https://git.kernel.org/stable/c/105425b1969c5affe532713cfac1c0b320d7ac2b"
        }
      ],
      "title": "net/sched: taprio: fix use-after-free in advance_sched() on schedule switch",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53011",
    "datePublished": "2026-06-24T16:29:22.082Z",
    "dateReserved": "2026-06-09T07:44:35.378Z",
    "dateUpdated": "2026-08-05T12:32:38.643Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/serial/mxuport.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "086b858b5f5125bc9d967ea2bd825f83d9f8f29d",
              "status": "affected",
              "version": "ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e",
              "versionType": "git"
            },
            {
              "lessThan": "2f3661eb2446e1ef593da45e01a3b21a906768ec",
              "status": "affected",
              "version": "ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e",
              "versionType": "git"
            },
            {
              "lessThan": "ccbec56f2f9af008f1574335cc6a668f16603e47",
              "status": "affected",
              "version": "ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e",
              "versionType": "git"
            },
            {
              "lessThan": "be3a1ed4ae51fa8dde57383277d336ce834f2cd9",
              "status": "affected",
              "version": "ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e",
              "versionType": "git"
            },
            {
              "lessThan": "e906545641d34fb1a09a65b4b5cfdff40eb09681",
              "status": "affected",
              "version": "ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e",
              "versionType": "git"
            },
            {
              "lessThan": "6c0cf56f00f280d72180bb6ce79741bc787a6269",
              "status": "affected",
              "version": "ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e",
              "versionType": "git"
            },
            {
              "lessThan": "b40166b4ef96067620a0f248e74ad9658c8f680c",
              "status": "affected",
              "version": "ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e",
              "versionType": "git"
            },
            {
              "lessThan": "4085f0dbb1ce2251c9a5938d693de6593f0ab2bd",
              "status": "affected",
              "version": "ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/serial/mxuport.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.14"
            },
            {
              "lessThan": "3.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.93",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.259",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.210",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.176",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.143",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.93",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.35",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.12",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: mxuport: fix memory corruption with small endpoint\n\nMake sure that the bulk-out endpoint max packet size is at least eight\nbytes to avoid user-controlled slab corruption should a malicious device\nreport a smaller size."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T14:55:08.116Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/086b858b5f5125bc9d967ea2bd825f83d9f8f29d"
        },
        {
          "url": "https://git.kernel.org/stable/c/2f3661eb2446e1ef593da45e01a3b21a906768ec"
        },
        {
          "url": "https://git.kernel.org/stable/c/ccbec56f2f9af008f1574335cc6a668f16603e47"
        },
        {
          "url": "https://git.kernel.org/stable/c/be3a1ed4ae51fa8dde57383277d336ce834f2cd9"
        },
        {
          "url": "https://git.kernel.org/stable/c/e906545641d34fb1a09a65b4b5cfdff40eb09681"
        },
        {
          "url": "https://git.kernel.org/stable/c/6c0cf56f00f280d72180bb6ce79741bc787a6269"
        },
        {
          "url": "https://git.kernel.org/stable/c/b40166b4ef96067620a0f248e74ad9658c8f680c"
        },
        {
          "url": "https://git.kernel.org/stable/c/4085f0dbb1ce2251c9a5938d693de6593f0ab2bd"
        }
      ],
      "title": "USB: serial: mxuport: fix memory corruption with small endpoint",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63899",
    "datePublished": "2026-07-19T14:55:08.116Z",
    "dateReserved": "2026-07-19T07:54:57.019Z",
    "dateUpdated": "2026-07-19T14:55:08.116Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_sync.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9cebe4680bb9a72f80c6541eb24af06db7a1fbc9",
              "status": "affected",
              "version": "877afadad2dce8aae1f2aad8ce47e072d4f6165e",
              "versionType": "git"
            },
            {
              "lessThan": "47330cc875b36a1cf7b3543cb2cf90a7c603ce0e",
              "status": "affected",
              "version": "877afadad2dce8aae1f2aad8ce47e072d4f6165e",
              "versionType": "git"
            },
            {
              "lessThan": "60bceb9a4c693e68cc90ba4b2dfb9e000e8638ff",
              "status": "affected",
              "version": "877afadad2dce8aae1f2aad8ce47e072d4f6165e",
              "versionType": "git"
            },
            {
              "lessThan": "525daaea459fc215f432de1b8debbd9144bf97b0",
              "status": "affected",
              "version": "877afadad2dce8aae1f2aad8ce47e072d4f6165e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4bf367fa1fefabdf14938d0ac9ed60020389112e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "3b382555706558f5c0587862b6dc03e96a252bba",
              "versionType": "git"
            },
            {
              "lessThan": "5.19",
              "status": "affected",
              "version": "5.18.18",
              "versionType": "semver"
            },
            {
              "lessThan": "5.20",
              "status": "affected",
              "version": "5.19.2",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_sync.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.93",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.93",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.35",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.12",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.18.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.19.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE during device close\n\nSince hci_dev_close_sync() can now be called during the reset path, we\nshould also set HCI_CMD_DRAIN_WORKQUEUE. This avoids queuing timeouts\nwhile the hdev workqueue is being drained."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - This is a Bluetooth HCI subsystem bug where exploitation requires concurrent HCI controller events from the radio during adapter close/reset; on phones and laptops with Bluetooth enabled in public spaces, a nearby attacker can supply that traffic while the kernel tears down the adapter.\nAC:L - The attacker controls both sides of the race by timing Bluetooth traffic against adapter reset/close or error-recovery teardown, and syzbot reliably reproduced the original workqueue-drain class of this bug.\nPR:N - No local credentials are required on the remote path: a nearby Bluetooth attacker can drive ncmd/cmd timeout recovery that calls hci_dev_do_close() \u2192 hci_dev_close_sync(); local CAP_NET_ADMIN ioctl reset is an additional reachable path via user namespaces.\nUI:N - Exploitation does not require the victim to perform a specific action beyond having Bluetooth enabled, which is the default on most mobile and laptop deployments.\nS:U - Impact is confined to kernel Bluetooth/HCI state and does not cross a security boundary such as a VM escape or sandbox breakout.\nC:H - Queueing work onto a draining workqueue corrupts kernel workqueue metadata for cmd_timer/ncmd_timer delayed-work structures, which is memory corruption that could be leveraged for information disclosure during the close/open reset cycle.\nI:H - The workqueue invariant violation leaves delayed-work items in inconsistent states on a persistent hdev-\u003eworkqueue that is reused after reset, creating a plausible path to control-flow hijack via corrupted work callbacks.\nA:H - Triggering this bug produces a kernel WARNING in __queue_work() (kernel panic on panic_on_warn systems) and can cause drain_workqueue() to spin with repeated reflush attempts, denying Bluetooth availability and potentially hanging the adapter teardown path."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:37:44.929Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9cebe4680bb9a72f80c6541eb24af06db7a1fbc9"
        },
        {
          "url": "https://git.kernel.org/stable/c/47330cc875b36a1cf7b3543cb2cf90a7c603ce0e"
        },
        {
          "url": "https://git.kernel.org/stable/c/60bceb9a4c693e68cc90ba4b2dfb9e000e8638ff"
        },
        {
          "url": "https://git.kernel.org/stable/c/525daaea459fc215f432de1b8debbd9144bf97b0"
        }
      ],
      "title": "Bluetooth: hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE during device close",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63974",
    "datePublished": "2026-07-19T14:55:59.994Z",
    "dateReserved": "2026-07-19T07:54:57.024Z",
    "dateUpdated": "2026-08-05T12:37:44.929Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/mlme.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2d8379834800c30602f24c71ab7c40f5fe84d200",
              "status": "affected",
              "version": "de86c5f60839dc0d771711a848b4f55ad3f90844",
              "versionType": "git"
            },
            {
              "lessThan": "863f1f02a3bd70dbd857b8ac4070292fde8cb4e2",
              "status": "affected",
              "version": "de86c5f60839dc0d771711a848b4f55ad3f90844",
              "versionType": "git"
            },
            {
              "lessThan": "f718506edd2d9c6a308ded9d13c632bf7b7d5a2c",
              "status": "affected",
              "version": "de86c5f60839dc0d771711a848b4f55ad3f90844",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/mlme.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.34",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.11",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: bounds-check link_id in ieee80211_ml_epcs\n\nIEEE80211_MLE_STA_EPCS_CONTROL_LINK_ID is 0x000f, so link_id extracted\nfrom a PRIO_ACCESS ML element PER_STA_PROFILE subelement can be 0..15.\nsdata-\u003elink[] has IEEE80211_MLD_MAX_NUM_LINKS (15) entries (indices 0..14),\nmaking index 15 out-of-bounds.\n\nA connected WiFi 7 AP can trigger this by sending an EPCS Enable Response\naction frame with a PER_STA_PROFILE subelement where link_id = 15.  The\nunsolicited-notification path (dialog_token = 0) is reachable any time\nEPCS is already enabled, without any prior client request.\n\nsdata-\u003elink[15] reads into the first word of sdata-\u003eactivate_links_work\n(a wiphy_work whose embedded list_head is non-NULL after INIT_LIST_HEAD),\nso the NULL check on the result does not catch the invalid access.  The\ngarbage pointer is then passed to ieee80211_sta_wmm_params(), which\ndereferences link-\u003esdata and crashes the kernel.\n\nThe same class of bug was fixed for ieee80211_ml_reconfiguration() by\ncommit 162d331d833d (\"wifi: mac80211: bounds-check link_id in\nieee80211_ml_reconfiguration\")."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - A malicious or compromised WiFi 7 AP transmits a crafted EPCS Enable Response action frame over the wireless link; exploitation requires proximity on the same WiFi segment, not remote internet reachability.\nAC:L - Once a victim WiFi 7 MLD station is associated with an EPCS-capable AP, the attacker reliably triggers the bug by setting link_id=15 in a PER_STA_PROFILE subelement, including via the unsolicited notification path (dialog_token=0) when EPCS is already enabled.\nPR:N - The attacker acts as the associated AP sending forged management frames and needs no local privileges, accounts, or capabilities on the victim system.\nUI:N - After association and EPCS enablement, the kernel processes the malicious frame automatically with no further victim action required at exploit time.\nS:U - Impact is confined to kernel memory corruption and crash on the victim station; it does not cross a VM, IOMMU, or sandbox security boundary.\nC:H - Out-of-bounds read of sdata-\u003elink[15] pulls a kernel pointer from adjacent sdata-\u003eactivate_links_work memory, and the resulting bogus pointer is dereferenced as ieee80211_link_data, constituting an unbounded kernel memory read primitive.\nI:H - The out-of-bounds pointer is used as a valid ieee80211_link_data structure; if execution proceeds past the initial dereference, _ieee80211_sta_wmm_params() can write to link-\u003etx_conf[] at incorrect offsets, enabling potential kernel memory corruption beyond a simple fault.\nA:H - The invalid pointer dereference in ieee80211_sta_wmm_params() causes a kernel oops/panic, resulting in complete loss of availability for the victim system."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:38:24.204Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2d8379834800c30602f24c71ab7c40f5fe84d200"
        },
        {
          "url": "https://git.kernel.org/stable/c/863f1f02a3bd70dbd857b8ac4070292fde8cb4e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/f718506edd2d9c6a308ded9d13c632bf7b7d5a2c"
        }
      ],
      "title": "wifi: mac80211: bounds-check link_id in ieee80211_ml_epcs",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64030",
    "datePublished": "2026-07-19T15:39:20.982Z",
    "dateReserved": "2026-07-19T07:54:57.028Z",
    "dateUpdated": "2026-08-05T12:38:24.204Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bridge/br_multicast.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ddefd1b8e5eb58933a697ab38334f0fd82e7fb8b",
              "status": "affected",
              "version": "410a033bfa8c7daefbae0225c836693db2149ec1",
              "versionType": "git"
            },
            {
              "lessThan": "ed3b69e60385a03df11c6d12e5d7bdf0f4a11b70",
              "status": "affected",
              "version": "c6d16eab122744df698f18b47cf771945cd55066",
              "versionType": "git"
            },
            {
              "lessThan": "1900ca8acb92fbea8bf9abef9927c7fed03db7fc",
              "status": "affected",
              "version": "b4c83b37490d61cfdd62a2b29e98a9b89004b5c0",
              "versionType": "git"
            },
            {
              "lessThan": "ebe5561154c823b323bd06e350b55e0b8604d851",
              "status": "affected",
              "version": "78f768e36c065ca3f88272fcf39014782c2d4ecd",
              "versionType": "git"
            },
            {
              "lessThan": "a9224862d597d0eed0a34bbb27343f703fc4113f",
              "status": "affected",
              "version": "4b30ae9adb047dd0a7982975ec3933c529537026",
              "versionType": "git"
            },
            {
              "lessThan": "7213256c91ed778a0997c2029c152b18dc50e4fd",
              "status": "affected",
              "version": "4b30ae9adb047dd0a7982975ec3933c529537026",
              "versionType": "git"
            },
            {
              "lessThan": "4df78ff02629c7729168f0696a7a2123c389818d",
              "status": "affected",
              "version": "4b30ae9adb047dd0a7982975ec3933c529537026",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c996e25df0b3282c724bb5aca434518bc08cd963",
              "versionType": "git"
            },
            {
              "lessThan": "5.15.209",
              "status": "affected",
              "version": "5.15.186",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.175",
              "status": "affected",
              "version": "6.1.142",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.142",
              "status": "affected",
              "version": "6.6.95",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.92",
              "status": "affected",
              "version": "6.12.35",
              "versionType": "semver"
            },
            {
              "lessThan": "6.16",
              "status": "affected",
              "version": "6.15.4",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bridge/br_multicast.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.142",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.92",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
                  "versionStartIncluding": "5.15.186",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "6.1.142",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.142",
                  "versionStartIncluding": "6.6.95",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.92",
                  "versionStartIncluding": "6.12.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.34",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.11",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.15.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbridge: mcast: Fix a possible use-after-free when removing a bridge port\n\nWhen per-VLAN multicast snooping is enabled, the bridge iterates over\nall the bridge ports, disables the per-port multicast context on each\nport and enables the per-{port, VLAN} multicast contexts instead. The\nreverse happens when per-VLAN multicast snooping is disabled.\n\nWhen global multicast snooping is enabled, the bridge iterates over all\nthe bridge ports and enables the per-port multicast context on each\nport. The reverse happens when multicast snooping is disabled.\n\nThe above scheme can result in a situation where both types of contexts\n(per-port and per-{port, VLAN}) are enabled on a single bridge port:\n\n # ip link add name br1 up type bridge mcast_snooping 1 mcast_querier 1 vlan_filtering 1\n # ip link add name dummy1 up master br1 type dummy\n # ip link set dev br1 type bridge mcast_vlan_snooping 1\n # ip link set dev br1 type bridge mcast_snooping 0\n # ip link set dev br1 type bridge mcast_snooping 1\n\nThis is not intended and it is a problem since the commit cited below.\nPrior to this commit, when removing a bridge port,\nbr_multicast_disable_port() would disable the per-port multicast context\nand the per-{port, VLAN} multicast contexts would get disabled when\nflushing VLANs.\n\nAfter this commit, br_multicast_disable_port() only disables the\nper-port multicast context if per-VLAN multicast snooping is disabled.\nIf both types of contexts were enabled on the port when it was removed,\nthe per-port multicast context would remain enabled when freeing the\nbridge port, leading to a use-after-free [1].\n\nFix by preventing the bridge from enabling / disabling the per-port\nmulticast contexts when toggling global multicast snooping if per-VLAN\nmulticast snooping is enabled.\n\n[1]\nODEBUG: free active (active state 0) object: ffff88810f8bda78 object type: timer_list hint: br_ip6_multicast_port_query_expired (net/bridge/br_multicast.c:1927)\nWARNING: lib/debugobjects.c:629 at debug_print_object+0x1b1/0x3e0, CPU#5: swapper/5/0\n[...]\nCall Trace:\n\u003cIRQ\u003e\n__debug_check_no_obj_freed (lib/debugobjects.c:1116)\nkfree (mm/slub.c:2620 mm/slub.c:6250 mm/slub.c:6565)\nkobject_cleanup (lib/kobject.c:689)\nrcu_do_batch (kernel/rcu/tree.c:2617)\nrcu_core (kernel/rcu/tree.c:2869)\nhandle_softirqs (kernel/softirq.c:622)\n__irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)\nirq_exit_rcu (kernel/softirq.c:752)\nsysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 47) arch/x86/kernel/apic/apic.c:1061 (discriminator 47))\n\u003c/IRQ\u003e"
        }
      ],
      "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 vulnerable code is reached only through local bridge administration (rtnetlink RTM_NEWLINK, bridge ioctl, or sysfs), not through processing of remote network packets. An attacker must issue `ip link`/`bridge` configuration commands to create the inconsistent multicast state and remove a bridge port.\nAC:L - The reproducer sequence is fully attacker-controlled and deterministic; syzkaller triggered it reliably. The attacker configures the toggle sequence, removes the port, and the orphaned IGMP/MLD query timers fire on schedule without depending on uncontrollable timing or memory layout.\nPR:L - All entry paths require CAP_NET_ADMIN in the target network namespace (rtnetlink at rtnl_newlink, br_ioctl add_del_if, sysfs bridge attributes). Unprivileged local users can obtain this capability by creating a user+network namespace (`unshare -Urn`), which is widely enabled on server and container hosts.\nUI:N - Exploitation requires no action from any other user or victim; the attacker performs the entire bridge setup, state toggling, and port removal themselves.\nS:U - Successful exploitation corrupts kernel memory within the same kernel security domain. This is a standard local kernel memory corruption issue, not a cross-boundary escape such as VM guest-to-host or IOMMU bypass.\nC:H - This is a heap use-after-free on a freed net_bridge_port structure; the timer callback dereferences pmctx-\u003eport-\u003ebr on freed memory. UAF on kernel slab objects enables arbitrary kernel memory reads via heap grooming and reclamation of the freed port object.\nI:H - The UAF occurs in a timer softirq handler that reads and writes through fields of the freed port multicast context, including sending queries via br_multicast_send_query. Kernel heap UAF is exploitable for arbitrary write and control-flow hijack primitives, not merely a crash.\nA:H - The freed port structure is kfree\u0027d while IGMP/MLD own-query timers remain active, producing a debugobjects \"free active timer\" warning and use-after-free in softirq. This reliably causes kernel oops/panic and can be triggered repeatedly to deny service on shared infrastructure such as cloud hosts or software switches."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:38:26.376Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ddefd1b8e5eb58933a697ab38334f0fd82e7fb8b"
        },
        {
          "url": "https://git.kernel.org/stable/c/ed3b69e60385a03df11c6d12e5d7bdf0f4a11b70"
        },
        {
          "url": "https://git.kernel.org/stable/c/1900ca8acb92fbea8bf9abef9927c7fed03db7fc"
        },
        {
          "url": "https://git.kernel.org/stable/c/ebe5561154c823b323bd06e350b55e0b8604d851"
        },
        {
          "url": "https://git.kernel.org/stable/c/a9224862d597d0eed0a34bbb27343f703fc4113f"
        },
        {
          "url": "https://git.kernel.org/stable/c/7213256c91ed778a0997c2029c152b18dc50e4fd"
        },
        {
          "url": "https://git.kernel.org/stable/c/4df78ff02629c7729168f0696a7a2123c389818d"
        }
      ],
      "title": "bridge: mcast: Fix a possible use-after-free when removing a bridge port",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64032",
    "datePublished": "2026-07-19T15:39:22.228Z",
    "dateReserved": "2026-07-19T07:54:57.028Z",
    "dateUpdated": "2026-08-05T12:38:26.376Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/idpf/idpf_ptp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "eb5991d4c8ba2e8153dfcda3e66a9608377b7dce",
              "status": "affected",
              "version": "5cb8805d2366b20ee4d7afff586d8acf17649330",
              "versionType": "git"
            },
            {
              "lessThan": "3122d70b7c0101d897fb795658a7b93f854935f2",
              "status": "affected",
              "version": "5cb8805d2366b20ee4d7afff586d8acf17649330",
              "versionType": "git"
            },
            {
              "lessThan": "da4f76b6a84ede14a71282ef841768299ead0221",
              "status": "affected",
              "version": "5cb8805d2366b20ee4d7afff586d8acf17649330",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/idpf/idpf_ptp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.34",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.11",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: fix read_dev_clk_lock spinlock init in idpf_ptp_init()\n\nIn idpf_ptp_init(), read_dev_clk_lock is initialized after\nptp_schedule_worker() had already been called (and after\nidpf_ptp_settime64() could reach the lock). The PTP aux worker\nfires immediately upon scheduling and can call into\nidpf_ptp_read_src_clk_reg_direct(), which takes\nspin_lock(\u0026ptp-\u003eread_dev_clk_lock) on an uninitialized lock, triggering\nthe lockdep \"non-static key\" warning:\n\n[12973.796587] idpf 0000:83:00.0: Device HW Reset initiated\n[12974.094507] INFO: trying to register non-static key.\n...\n[12974.097208] Call Trace:\n[12974.097213]  \u003cTASK\u003e\n[12974.097218]  dump_stack_lvl+0x93/0xe0\n[12974.097234]  register_lock_class+0x4c4/0x4e0\n[12974.097249]  ? __lock_acquire+0x427/0x2290\n[12974.097259]  __lock_acquire+0x98/0x2290\n[12974.097272]  lock_acquire+0xc6/0x310\n[12974.097281]  ? idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf]\n[12974.097311]  ? lockdep_hardirqs_on_prepare+0xde/0x190\n[12974.097318]  ? finish_task_switch.isra.0+0xd2/0x350\n[12974.097330]  ? __pfx_ptp_aux_kworker+0x10/0x10 [ptp]\n[12974.097343]  _raw_spin_lock+0x30/0x40\n[12974.097353]  ? idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf]\n[12974.097373]  idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf]\n[12974.097391]  ? kthread_worker_fn+0x88/0x3d0\n[12974.097404]  ? kthread_worker_fn+0x4e/0x3d0\n[12974.097411]  idpf_ptp_update_cached_phctime+0x26/0x120 [idpf]\n[12974.097428]  ? _raw_spin_unlock_irq+0x28/0x50\n[12974.097436]  idpf_ptp_do_aux_work+0x15/0x20 [idpf]\n[12974.097454]  ptp_aux_kworker+0x20/0x40 [ptp]\n[12974.097464]  kthread_worker_fn+0xd5/0x3d0\n[12974.097474]  ? __pfx_kthread_worker_fn+0x10/0x10\n[12974.097482]  kthread+0xf4/0x130\n[12974.097489]  ? __pfx_kthread+0x10/0x10\n[12974.097498]  ret_from_fork+0x32c/0x410\n[12974.097512]  ? __pfx_kthread+0x10/0x10\n[12974.097519]  ret_from_fork_asm+0x1a/0x30\n[12974.097540]  \u003c/TASK\u003e\n\nMove the call to spin_lock_init() up a bit to make sure read_dev_clk_lock\nis not touched before it\u0027s been initialized."
        }
      ],
      "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 - On internet-facing cloud or datacenter hosts using Intel idpf NICs, a remote peer can send sustained or crafted traffic that stalls TX completion, triggering `idpf_tx_timeout()` \u2192 hardware reset \u2192 `idpf_vc_core_init()` \u2192 `idpf_ptp_init()`, which reaches the uninitialized `read_dev_clk_lock` via the immediately scheduled PTP aux worker or `idpf_ptp_settime64()`.\nAC:L - Once PTP reinitialization runs with device clock access enabled, `ptp_schedule_worker(..., 0)` fires the aux kworker immediately and races deterministically with the late `spin_lock_init()`; the attacker does not need to win a timing lottery beyond causing the reset that enters this path.\nPR:N - Triggering the vulnerable init path via TX-timeout-driven hardware reset requires no target-system privileges\u2014only the ability to send traffic to a network interface managed by idpf, including unauthenticated remote access to a publicly reachable server.\nUI:N - Exploitation is fully automated once the attacker induces the reset/recovery sequence; no victim login, configuration change, or other voluntary action is required.\nS:U - Impact is confined to kernel/driver state on the host running idpf; it does not cross a VM, container, or IOMMU security boundary into another authority.\nC:H - Using `spin_lock()` on an uninitialized (zeroed) lock allows concurrent, unsynchronized entry into `idpf_ptp_read_src_clk_reg_direct()` and shared PHC/MMIO read paths, creating a race on kernel/driver state that can be leveraged for information disclosure under the kernel CNA guidance for synchronization-breaking bugs.\nI:H - Concurrent unsynchronized callers can interleave `idpf_ptp_enable_shtime()` MMIO writes and cached PHC updates, corrupting device clock and driver timing state in ways that constitute exploitable integrity impact beyond a benign crash.\nA:H - Taking an uninitialized spinlock during HW-reset recovery can cause kernel deadlock, oops, or hang (lockdep \u201cnon-static key\u201d failure was observed in the fix commit\u2019s HW-reset trace), satisfying high availability impact for kernel stability bugs."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:39:51.253Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/eb5991d4c8ba2e8153dfcda3e66a9608377b7dce"
        },
        {
          "url": "https://git.kernel.org/stable/c/3122d70b7c0101d897fb795658a7b93f854935f2"
        },
        {
          "url": "https://git.kernel.org/stable/c/da4f76b6a84ede14a71282ef841768299ead0221"
        }
      ],
      "title": "idpf: fix read_dev_clk_lock spinlock init in idpf_ptp_init()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64162",
    "datePublished": "2026-07-19T15:40:48.461Z",
    "dateReserved": "2026-07-19T07:54:57.038Z",
    "dateUpdated": "2026-08-05T12:39:51.253Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/iucv/af_iucv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5f08c5e50bcb4680069bd3f9edd5728308816ded",
              "status": "affected",
              "version": "f0703c80e5156406ad947cb67fe277725b48080f",
              "versionType": "git"
            },
            {
              "lessThan": "c24faf11bd31bfe0500aca12cbdd5a573a954a5d",
              "status": "affected",
              "version": "f0703c80e5156406ad947cb67fe277725b48080f",
              "versionType": "git"
            },
            {
              "lessThan": "99ddb33748698296a6f17b9b34aa3d16a406bb3c",
              "status": "affected",
              "version": "f0703c80e5156406ad947cb67fe277725b48080f",
              "versionType": "git"
            },
            {
              "lessThan": "23658b350b4107e8292045c2044983fd426fa15d",
              "status": "affected",
              "version": "f0703c80e5156406ad947cb67fe277725b48080f",
              "versionType": "git"
            },
            {
              "lessThan": "a5bbaddf69853117f28173c3f5c8fc14c6b2ec82",
              "status": "affected",
              "version": "f0703c80e5156406ad947cb67fe277725b48080f",
              "versionType": "git"
            },
            {
              "lessThan": "900cd6d8119b7f3ae5c4bf82f922ff5957df43db",
              "status": "affected",
              "version": "f0703c80e5156406ad947cb67fe277725b48080f",
              "versionType": "git"
            },
            {
              "lessThan": "f579582c03ed526281a8450159baf1d35099a85f",
              "status": "affected",
              "version": "f0703c80e5156406ad947cb67fe277725b48080f",
              "versionType": "git"
            },
            {
              "lessThan": "be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a",
              "status": "affected",
              "version": "f0703c80e5156406ad947cb67fe277725b48080f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/iucv/af_iucv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.24"
            },
            {
              "lessThan": "2.6.24",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.265",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.216",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.183",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.148",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.101",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.42",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.6",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/iucv: fix use-after-free of a severed iucv_path\n\naf_iucv queues not-yet-received message notifications on iucv-\u003emessage_q,\neach holding a raw pointer to the connection\u0027s iucv_path.  When the peer\nsevers the connection, iucv_sever_path() frees that path with\niucv_path_free() but leaves the notifications queued.  A later recvmsg()\ndrains message_q via iucv_process_message_q() and hands the stale path to\nmessage_receive() -- a use-after-free of the freed iucv_path.\n\nDrop the queued notifications when the path is severed; once the path is\ngone they can no longer be received.  This also frees the notifications\nleaked when a socket is closed with messages still queued."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - An adjacent z/VM guest or LPAR peer can establish an AF_IUCV connection and deliver IUCV message_pending and path_severed events to a victim; exploitation requires same-CPC IUCV reachability, not Internet-wide access.\nAC:L - The attacker deterministically floods IUCV messages to fill message_q, severs the connection to free iucv_path, then victim recvmsg() drains the stale queue; no uncontrollable timing or memory-layout luck is required.\nPR:N - On the victim, no local Linux account or capability is needed; any unauthorized adjacent IUCV peer that completes the AF_IUCV handshake can flood messages and sever the path against a listening service.\nUI:N - No special victim action is required beyond normal server recvmsg() on an established IUCV session; the attacker drives connection setup, message flood, and path sever entirely from the peer side.\nS:U - Impact is kernel memory corruption within the victim Linux guest; it does not cross hypervisor, VM-escape, or IOMMU security boundaries.\nC:H - Queued notifications dereference a freed struct iucv_path in message_receive(), passing stale pathid and private fields into CP IUCV RECEIVE calls\u2014a classic UAF enabling attacker-controlled heap reuse and kernel memory disclosure.\nI:H - Use-after-free of iucv_path lets an attacker reclaim the freed object and supply forged pathid and list pointers used by __iucv_message_receive(), providing heap corruption primitives suitable for arbitrary kernel write or code execution.\nA:H - Processing the stale path in iucv_process_message_q() dereferences freed kernel memory during message_receive(), reliably causing kernel oops or panic and total loss of availability even before full exploitation."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T16:29:57.127Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5f08c5e50bcb4680069bd3f9edd5728308816ded"
        },
        {
          "url": "https://git.kernel.org/stable/c/c24faf11bd31bfe0500aca12cbdd5a573a954a5d"
        },
        {
          "url": "https://git.kernel.org/stable/c/99ddb33748698296a6f17b9b34aa3d16a406bb3c"
        },
        {
          "url": "https://git.kernel.org/stable/c/23658b350b4107e8292045c2044983fd426fa15d"
        },
        {
          "url": "https://git.kernel.org/stable/c/a5bbaddf69853117f28173c3f5c8fc14c6b2ec82"
        },
        {
          "url": "https://git.kernel.org/stable/c/900cd6d8119b7f3ae5c4bf82f922ff5957df43db"
        },
        {
          "url": "https://git.kernel.org/stable/c/f579582c03ed526281a8450159baf1d35099a85f"
        },
        {
          "url": "https://git.kernel.org/stable/c/be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a"
        }
      ],
      "title": "net/iucv: fix use-after-free of a severed iucv_path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68140",
    "datePublished": "2026-08-10T11:59:03.761Z",
    "dateReserved": "2026-07-30T09:28:09.370Z",
    "dateUpdated": "2026-08-19T16:29:57.127Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sched/act_tunnel_key.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b5931f020b681fdcb9378262d89b61cb3c7ebbf8",
              "status": "affected",
              "version": "9174c3df1cd181c14913138d50ccbe539bb08335",
              "versionType": "git"
            },
            {
              "lessThan": "389d03992dabb80488228e8119b9dd6d0f58e1a6",
              "status": "affected",
              "version": "9174c3df1cd181c14913138d50ccbe539bb08335",
              "versionType": "git"
            },
            {
              "lessThan": "676ad6aa7cec89a08d2a5ce3cd5959e313f29733",
              "status": "affected",
              "version": "9174c3df1cd181c14913138d50ccbe539bb08335",
              "versionType": "git"
            },
            {
              "lessThan": "531dbb5bb98e52ad26be7e90f9f8bec707c5bd0e",
              "status": "affected",
              "version": "9174c3df1cd181c14913138d50ccbe539bb08335",
              "versionType": "git"
            },
            {
              "lessThan": "2200a00ff247f70f5dcdb4e6f14b0d48ddac5467",
              "status": "affected",
              "version": "9174c3df1cd181c14913138d50ccbe539bb08335",
              "versionType": "git"
            },
            {
              "lessThan": "fed1b1ddab41a0e7a462ac690a0c8af6ff793624",
              "status": "affected",
              "version": "9174c3df1cd181c14913138d50ccbe539bb08335",
              "versionType": "git"
            },
            {
              "lessThan": "2791a501da508b704a617b4dba29db54a65bc9f7",
              "status": "affected",
              "version": "9174c3df1cd181c14913138d50ccbe539bb08335",
              "versionType": "git"
            },
            {
              "lessThan": "f1f5c8a3955f8fda3f84ed883ac8daa1847e724c",
              "status": "affected",
              "version": "9174c3df1cd181c14913138d50ccbe539bb08335",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "02239e797ac75f89a05622a27d04695f08c1ca89",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ca9b7a65a2c97579fcdd509d454d48e3a5c49af8",
              "versionType": "git"
            },
            {
              "lessThan": "4.20",
              "status": "affected",
              "version": "4.19.19",
              "versionType": "semver"
            },
            {
              "lessThan": "4.21",
              "status": "affected",
              "version": "4.20.6",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/sched/act_tunnel_key.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.0"
            },
            {
              "lessThan": "5.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.265",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.216",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.183",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.148",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.101",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.42",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.6",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.19.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.20.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_tunnel_key: Defer dst_release to RCU callback\n\nFix a race-condition use-after-free in tunnel_key_release_params().\n\nThe function releases the metadata_dst of the old params synchronously\nvia dst_release() while deferring the params struct free with\nkfree_rcu(). A concurrent tunnel_key_act() reader on the datapath may\nstill hold the old params pointer (under rcu_read_lock_bh) and proceed\nto call dst_clone(\u0026params-\u003etcft_enc_metadata-\u003edst) after the writer\u0027s\ndst_release has already pushed the dst\u0027s rcuref to RCUREF_DEAD.\n\nzdi-disclosures@trendmicro.com produced a poc which i (and Victor) verified\nthat KASAN reports:\n\n==================================================================\nBUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:112\nBUG: KASAN: slab-use-after-free in atomic_sub_return_release include/linux/atomic/atomic-instrumented.h:326\nBUG: KASAN: slab-use-after-free in __rcuref_put include/linux/rcuref.h:109\nBUG: KASAN: slab-use-after-free in rcuref_put include/linux/rcuref.h:173\nBUG: KASAN: slab-use-after-free in dst_release+0x5b/0x370 net/core/dst.c:168\nWrite of size 4 at addr ffff88806158de40 by task poc/9388\n\nCPU: 0 UID: 0 PID: 9388 Comm: poc Tainted: G        W           7.1.0-rc7 #7 PREEMPT(lazy)\nTainted: [W]=WARN\nHardware name: QEMU Ubuntu 25.10 PC v2 (i440FX + PIIX, + 10.1 machine, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:94\n dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:378\n print_report+0x139/0x4ad mm/kasan/report.c:482\n kasan_report+0xe4/0x1d0 mm/kasan/report.c:595\n check_region_inline mm/kasan/generic.c:186\n kasan_check_range+0x125/0x200 mm/kasan/generic.c:200\n instrument_atomic_read_write include/linux/instrumented.h:112\n atomic_sub_return_release include/linux/atomic/atomic-instrumented.h:326\n __rcuref_put include/linux/rcuref.h:109\n rcuref_put include/linux/rcuref.h:173\n dst_release+0x5b/0x370 net/core/dst.c:168\n refdst_drop include/net/dst.h:272\n skb_dst_drop include/net/dst.h:284\n skb_release_head_state+0x293/0x400 net/core/skbuff.c:1163\n skb_release_all net/core/skbuff.c:1187\n[..]\nAllocated by task 9391:\n kasan_save_stack+0x30/0x50 mm/kasan/common.c:57\n kasan_save_track+0x14/0x30 mm/kasan/common.c:78\n poison_kmalloc_redzone mm/kasan/common.c:398\n __kasan_kmalloc+0x9a/0xb0 mm/kasan/common.c:415\n kasan_kmalloc include/linux/kasan.h:263\n __do_kmalloc_node mm/slub.c:5296\n __kmalloc_noprof+0x2f1/0x830 mm/slub.c:5308\n kmalloc_noprof include/linux/slab.h:954\n kzalloc_noprof include/linux/slab.h:1188\n offload_action_alloc+0x2f/0x130 net/core/flow_offload.c:35\n tcf_action_offload_add_ex+0x1ba/0x880 net/sched/act_api.c:258\n tcf_action_offload_add net/sched/act_api.c:293\n tcf_action_init+0x66e/0xa20 net/sched/act_api.c:1547\n tcf_action_add+0xf6/0x5d0 net/sched/act_api.c:2101\n[..]\nFreed by task 9391:\n kasan_save_stack+0x30/0x50 mm/kasan/common.c:57\n kasan_save_track+0x14/0x30 mm/kasan/common.c:78\n kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584\n poison_slab_object mm/kasan/common.c:253\n __kasan_slab_free+0x6b/0x90 mm/kasan/common.c:285\n kasan_slab_free include/linux/kasan.h:235\n slab_free_hook mm/slub.c:2689\n slab_free mm/slub.c:6251\n kfree+0x21f/0x6b0 mm/slub.c:6566\n tcf_action_offload_add_ex+0x4ad/0x880 net/sched/act_api.c:284\n tcf_action_offload_add net/sched/act_api.c:293\n tcf_action_init+0x66e/0xa20 net/sched/act_api.c:1547\n tcf_action_add+0xf6/0x5d0 net/sched/act_api.c:2101\n\nThe buggy address belongs to the object at ffff88806158de00\n which belongs to the cache kmalloc-256 of size 256\nThe buggy address is located 64 bytes inside of\n freed 256-byte region [ffff88806158de00, ffff88806158df00)\n\nThe buggy address belongs to the physical page:\npage: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88806158d600 pfn:0x6158c\nhead: order:1 mapcount:0 entire_map\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 - The vulnerable window is opened via the tc/rtnetlink RTM_NEWACTION path (`tc action replace ... tunnel_key set`) and closed by locally generated traffic through a clsact/ingress filter, both requiring local system access rather than remote packets.\nAC:L - The attacker controls both sides of the race \u2014 one thread repeatedly replaces the tunnel_key action while another pumps packets through the filter \u2014 and can widen the window with qdisc backlog, so the UAF is reliably reproducible (a ZDI PoC reproduced it under KASAN).\nPR:L - The action-add path is gated only by netlink_capable(skb, CAP_NET_ADMIN), which is namespace-relative and obtainable by any unprivileged user via `unshare -Urn`; the packet side runs in the attacker\u0027s own netns.\nUI:N - Both the netlink action replace and the packet transmission that dereferences the stale params are performed entirely by the attacker\u0027s own processes; no victim action is involved.\nS:U - The corruption is confined to kernel heap memory within the same security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The freed metadata_dst sits in the general-purpose kmalloc-256 cache and remains attached to an skb, so tx paths read tunnel metadata out of reclaimed memory, giving an attacker who sprays the slab a route to disclose kernel data and defeat KASLR.\nI:H - The stale dst_clone/skb_dst_drop pair performs atomic 4-byte read-modify-write operations on a freed, attacker-reclaimable slab object, yielding a refcount-corruption primitive that is a well-established stepping stone to arbitrary write and privilege escalation.\nA:H - The use-after-free reliably corrupts slab memory and triggers KASAN-reported faults; unmitigated it causes kernel oops or panic, and the race can be repeated at will by an unprivileged user."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T16:34:38.220Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b5931f020b681fdcb9378262d89b61cb3c7ebbf8"
        },
        {
          "url": "https://git.kernel.org/stable/c/389d03992dabb80488228e8119b9dd6d0f58e1a6"
        },
        {
          "url": "https://git.kernel.org/stable/c/676ad6aa7cec89a08d2a5ce3cd5959e313f29733"
        },
        {
          "url": "https://git.kernel.org/stable/c/531dbb5bb98e52ad26be7e90f9f8bec707c5bd0e"
        },
        {
          "url": "https://git.kernel.org/stable/c/2200a00ff247f70f5dcdb4e6f14b0d48ddac5467"
        },
        {
          "url": "https://git.kernel.org/stable/c/fed1b1ddab41a0e7a462ac690a0c8af6ff793624"
        },
        {
          "url": "https://git.kernel.org/stable/c/2791a501da508b704a617b4dba29db54a65bc9f7"
        },
        {
          "url": "https://git.kernel.org/stable/c/f1f5c8a3955f8fda3f84ed883ac8daa1847e724c"
        }
      ],
      "title": "net/sched: act_tunnel_key: Defer dst_release to RCU callback",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68377",
    "datePublished": "2026-08-10T12:03:55.643Z",
    "dateReserved": "2026-07-30T09:28:09.386Z",
    "dateUpdated": "2026-08-19T16:34:38.220Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}