{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d9a6f0d0df1899ff9086a57abc600e414f4b8cdd"
            },
            {
              "fixed": "ca97360eba4b3dc67f1804625542f4ccc774242a"
            },
            {
              "fixed": "63853eb20bba4e00b7cd0b8cfc19337bbaaf5037"
            },
            {
              "fixed": "9480fcf70a5aa9d320088a01c95df0e5e6391f4a"
            },
            {
              "fixed": "0424186d570aa4d1ad17f516afb86bd9eaa4f42e"
            },
            {
              "fixed": "c0224327b7cbed9d3198e8dbec847281053dcd06"
            },
            {
              "fixed": "2d19b95c9723001f214f7a47d67b09f46238f200"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.1.0"
            },
            {
              "fixed": "6.1.184"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.152"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.104"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.45"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74624.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack: defer invalid log until after unlock\n\nTCP and SCTP conntrack paths can emit invalid-packet logs while ct-\u003elock\nis still held.\n\nWhen invalid logging is routed to nfnetlink_log and conntrack export is\nenabled, the log path can re-enter conntrack netlink glue and dump the\nsame conntrack again. Protocol attribute dumping may take ct-\u003elock, so\nlogging while holding that lock can deadlock.\n\nDefer the TCP invalid logs by storing only the minimal log context while\nct-\u003elock is held and emitting the log after unlocking. Also make the TCP\ntimeout-lowering invalid path return whether a log is needed, then emit\nthat log after unlocking.\n\nDo the same for the SCTP invalid state-transition log that can be reached\nwhile ct-\u003elock is held.\n\nAdd a lockdep assertion to nf_ct_l4proto_log_invalid() so future callers\nthat log invalid conntracks while holding ct-\u003elock are caught outside TCP\nand SCTP as well.",
  "id": "CVE-2026-74624",
  "modified": "2026-08-27T11:31:04.974693945Z",
  "published": "2026-08-22T15:32:07.193Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0424186d570aa4d1ad17f516afb86bd9eaa4f42e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2d19b95c9723001f214f7a47d67b09f46238f200"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/63853eb20bba4e00b7cd0b8cfc19337bbaaf5037"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9480fcf70a5aa9d320088a01c95df0e5e6391f4a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c0224327b7cbed9d3198e8dbec847281053dcd06"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ca97360eba4b3dc67f1804625542f4ccc774242a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74624.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74624"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "netfilter: nf_conntrack: defer invalid log until after unlock"
}