{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "cae3a2627520c3795b54533c5328b77af3405dbe"
            },
            {
              "fixed": "7866116a040b3a23fb094e7d8f7ea3d61b3ac70b"
            },
            {
              "fixed": "c5ef7228be04518d95591fc5369a9c554b19756d"
            },
            {
              "fixed": "0aec339694a56e263d4b22475ff7211d40900830"
            },
            {
              "fixed": "e64a48c50a1ff565a98c6a98d82b5b942868e76e"
            },
            {
              "fixed": "c199ed687c00841daf60e9d131976958583a8c09"
            },
            {
              "fixed": "09755dc62b026076b1d47f83489eb0547c8135e0"
            },
            {
              "fixed": "b843a96252f672332837ea2ecb7c8db0acf68e20"
            },
            {
              "fixed": "e5e24a365a5e024efef63cc49abb345fbd4852c5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.3.0"
            },
            {
              "fixed": "5.10.266"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.217"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.184"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "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-2026-72253.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack_sip: validate skb_dst() before accessing it\n\ntc ingress and openvswitch do not guarantee routing information to be\navailable. These subsystems use the conntrack helper infrastructure, and\nthe SIP helper relies on the skb_dst() to be present if\nsip_external_media is set to 1 (which is disabled by default as a module\nparameter).\n\nThis effectively disables the sip_external_media toggle for these\nsubsystems without resulting in a crash.",
  "id": "CVE-2026-72253",
  "modified": "2026-08-25T03:51:46.429096371Z",
  "published": "2026-08-15T05:54:41.490Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/09755dc62b026076b1d47f83489eb0547c8135e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0aec339694a56e263d4b22475ff7211d40900830"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7866116a040b3a23fb094e7d8f7ea3d61b3ac70b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b843a96252f672332837ea2ecb7c8db0acf68e20"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c199ed687c00841daf60e9d131976958583a8c09"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c5ef7228be04518d95591fc5369a9c554b19756d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e5e24a365a5e024efef63cc49abb345fbd4852c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e64a48c50a1ff565a98c6a98d82b5b942868e76e"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72253.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72253"
    },
    {
      "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_sip: validate skb_dst() before accessing it"
}