{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d452930fd3b9031e59abfeddb2fa383f1403d61a"
            },
            {
              "fixed": "5d4d93f9bfbc997ffbb03cd6107e8f6979dbb9b4"
            },
            {
              "fixed": "cc8bd47b35eca82393cbad08b1cc86f02e034439"
            },
            {
              "fixed": "d61a80b17254be7230bc5544f8e62ddf21ab38e2"
            },
            {
              "fixed": "37d642b37ccdc31e1947c2ebc8dc38f03d4a0ceb"
            },
            {
              "fixed": "56acfeb10019e200ab6787d01f8d7cbe0f01526f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.17.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72242.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: avoid sk_socket dereference in selinux_sctp_bind_connect()\n\nselinux_sctp_bind_connect() dereferences sk-\u003esk_socket to pass a\nstruct socket * to selinux_socket_bind() and\nselinux_socket_connect_helper().  However, when the hook is invoked\nfrom the ASCONF softirq path (sctp_process_asconf), there is no file\nreference guaranteeing that sk-\u003esk_socket is non-NULL.  The setsockopt\ncallers (bindx, connectx, set_primary, sendmsg connect) hold a file\nreference and are not affected.\n\nBoth selinux_socket_bind() and selinux_socket_connect_helper()\nimmediately resolve sock-\u003esk, never using the struct socket * for\nanything else.  Refactor the inner logic into helpers that take a\nstruct sock * directly so that selinux_sctp_bind_connect() never needs\nto touch sk-\u003esk_socket at all.",
  "id": "CVE-2026-72242",
  "modified": "2026-08-18T03:31:22.710146128Z",
  "published": "2026-08-15T05:54:30.378Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/37d642b37ccdc31e1947c2ebc8dc38f03d4a0ceb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/56acfeb10019e200ab6787d01f8d7cbe0f01526f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d4d93f9bfbc997ffbb03cd6107e8f6979dbb9b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc8bd47b35eca82393cbad08b1cc86f02e034439"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d61a80b17254be7230bc5544f8e62ddf21ab38e2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72242.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72242"
    },
    {
      "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": "selinux: avoid sk_socket dereference in selinux_sctp_bind_connect()"
}