{"id":"CVE-2026-72253","revision":null,"records":[{"revision":"fcebac9ea4c54a77b2c10db2292b39a8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72253","aliases":[],"title":"netfilter: nf_conntrack_sip: validate skb_dst() before accessing it","description":"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.","state":0,"publishedAt":"2026-08-15T05:54:41.49+00:00","modifiedAt":"2026-10-16T18:55:13.536+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/netfilter/nf_conntrack_sip.c\"\n ],\n \"versions\": [\n {\n \"version\": \"cae3a2627520c3795b54533c5328b77af3405dbe\",\n \"lessThan\": \"7866116a040b3a23fb094e7d8f7ea3d61b3ac70b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"cae3a2627520c3795b54533c5328b77af3405dbe\",\n \"lessThan\": \"c5ef7228be04518d95591fc5369a9c554b19756d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"cae3a2627520c3795b54533c5328b77af3405dbe\",\n \"lessThan\": \"0aec339694a56e263d4b22475ff7211d40900830\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"cae3a2627520c3795b54533c5328b77af3405dbe\",\n \"lessThan\": \"e64a48c50a1ff565a98c6a98d82b5b942868e76e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"cae3a2627520c3795b54533c5328b77af3405dbe\",\n \"lessThan\": \"c199ed687c00841daf60e9d131976958583a8c09\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"cae3a2627520c3795b54533c5328b77af3405dbe\",\n \"lessThan\": \"09755dc62b026076b1d47f83489eb0547c8135e0\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"cae3a2627520c3795b54533c5328b77af3405dbe\",\n \"lessThan\": \"b843a96252f672332837ea2ecb7c8db0acf68e20\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"cae3a2627520c3795b54533c5328b77af3405dbe\",\n \"lessThan\": \"e5e24a365a5e024efef63cc49abb345fbd4852c5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/netfilter/nf_conntrack_sip.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.3\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.3\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.266\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.217\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.184\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.148\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.101\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.42\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.5\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/7866116a040b3a23fb094e7d8f7ea3d61b3ac70b","https://git.kernel.org/stable/c/c5ef7228be04518d95591fc5369a9c554b19756d","https://git.kernel.org/stable/c/0aec339694a56e263d4b22475ff7211d40900830","https://git.kernel.org/stable/c/e64a48c50a1ff565a98c6a98d82b5b942868e76e","https://git.kernel.org/stable/c/c199ed687c00841daf60e9d131976958583a8c09","https://git.kernel.org/stable/c/09755dc62b026076b1d47f83489eb0547c8135e0","https://git.kernel.org/stable/c/b843a96252f672332837ea2ecb7c8db0acf68e20","https://git.kernel.org/stable/c/e5e24a365a5e024efef63cc49abb345fbd4852c5"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72253","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72253","identifiers":["CVE-2026-72253"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-f975b42a7c2d46f6899c3d764d777217","complete":false,"records":13654,"lastAttemptAt":"2026-11-09T09:16:12.2541949+00:00","lastSuccessAt":"2026-11-09T09:16:12.249+00:00","error":"7 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T09:16:12.249+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13699,"expectedIdentifiers":13706,"failedIdentifiers":7},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T09:04:02.9162191+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T09:04:02.9162191+00:00","lastSuccessAt":"2026-11-09T09:04:03.197028+00:00","error":null,"lastVerifiedAt":"2026-11-09T09:04:03.1970284+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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