{"id":"CVE-2026-53001","state":"PUBLISHED","title":"netfilter: xtables: restrict several matches to inet family","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: xtables: restrict several matches to inet family\n\nThis is a partial revert of:\n\n  commit ab4f21e6fb1c (\"netfilter: xtables: use NFPROTO_UNSPEC in more extensions\")\n\nto allow ipv4 and ipv6 only.\n\n- xt_mac\n- xt_owner\n- xt_physdev\n\nThese extensions are not used by ebtables in userspace.\n\nMoreover, xt_realm is only for ipv4, since dst->tclassid is ipv4\nspecific.","publishedAt":"2026-06-24T16:29:13.513Z","updatedAt":"2026-10-15T01:22:13.020Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"14203f9edf944b3fb63faadd62f38452421ecdfc","versionType":"git"},{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"7eaf9c740f33230cb224dc265f3c69f8531ff57b","versionType":"git"},{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"9a109751b297b0f2135495749ef5a18ba31ec7d4","versionType":"git"},{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"cbeb259f31382de70a70a59ffd0e66f5e80d9818","versionType":"git"},{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"689a91ff18d6448d94c1ab7c076fecdb2b668bef","versionType":"git"},{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"76160e04440c9698b989dbd9492a7ec4f520c9ee","versionType":"git"},{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"fa88161ef56e29bdaa05cc89dbc4ee221e94bfe9","versionType":"git"},{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"b6fe26f86a1649f84e057f3f15605b08eda15497","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/xt_mac.c","net/netfilter/xt_owner.c","net/netfilter/xt_physdev.c","net/netfilter/xt_realm.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.28","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.28","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.141","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.91","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/xt_mac.c","net/netfilter/xt_owner.c","net/netfilter/xt_physdev.c","net/netfilter/xt_realm.c"]}],"references":["https://git.kernel.org/stable/c/14203f9edf944b3fb63faadd62f38452421ecdfc","https://git.kernel.org/stable/c/7eaf9c740f33230cb224dc265f3c69f8531ff57b","https://git.kernel.org/stable/c/9a109751b297b0f2135495749ef5a18ba31ec7d4","https://git.kernel.org/stable/c/cbeb259f31382de70a70a59ffd0e66f5e80d9818","https://git.kernel.org/stable/c/689a91ff18d6448d94c1ab7c076fecdb2b668bef","https://git.kernel.org/stable/c/76160e04440c9698b989dbd9492a7ec4f520c9ee","https://git.kernel.org/stable/c/fa88161ef56e29bdaa05cc89dbc4ee221e94bfe9","https://git.kernel.org/stable/c/b6fe26f86a1649f84e057f3f15605b08eda15497","https://cert-portal.siemens.com/productcert/html/ssa-019113.html","https://cert-portal.siemens.com/productcert/html/ssa-457936.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53001.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53001","state":"PUBLISHED","datePublished":"2026-06-24T16:29:13.513Z","dateUpdated":"2026-10-15T01:22:13.020Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.377Z"},"containers":{"cna":{"title":"netfilter: xtables: restrict several matches to inet family","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: xtables: restrict several matches to inet family\n\nThis is a partial revert of:\n\n  commit ab4f21e6fb1c (\"netfilter: xtables: use NFPROTO_UNSPEC in more extensions\")\n\nto allow ipv4 and ipv6 only.\n\n- xt_mac\n- xt_owner\n- xt_physdev\n\nThese extensions are not used by ebtables in userspace.\n\nMoreover, xt_realm is only for ipv4, since dst->tclassid is ipv4\nspecific."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"14203f9edf944b3fb63faadd62f38452421ecdfc","versionType":"git"},{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"7eaf9c740f33230cb224dc265f3c69f8531ff57b","versionType":"git"},{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"9a109751b297b0f2135495749ef5a18ba31ec7d4","versionType":"git"},{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"cbeb259f31382de70a70a59ffd0e66f5e80d9818","versionType":"git"},{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"689a91ff18d6448d94c1ab7c076fecdb2b668bef","versionType":"git"},{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"76160e04440c9698b989dbd9492a7ec4f520c9ee","versionType":"git"},{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"fa88161ef56e29bdaa05cc89dbc4ee221e94bfe9","versionType":"git"},{"version":"ab4f21e6fb1c09b13c4c3cb8357babe8223471bd","status":"affected","lessThan":"b6fe26f86a1649f84e057f3f15605b08eda15497","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/xt_mac.c","net/netfilter/xt_owner.c","net/netfilter/xt_physdev.c","net/netfilter/xt_realm.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.28","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.28","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.141","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.91","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/xt_mac.c","net/netfilter/xt_owner.c","net/netfilter/xt_physdev.c","net/netfilter/xt_realm.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/14203f9edf944b3fb63faadd62f38452421ecdfc"},{"url":"https://git.kernel.org/stable/c/7eaf9c740f33230cb224dc265f3c69f8531ff57b"},{"url":"https://git.kernel.org/stable/c/9a109751b297b0f2135495749ef5a18ba31ec7d4"},{"url":"https://git.kernel.org/stable/c/cbeb259f31382de70a70a59ffd0e66f5e80d9818"},{"url":"https://git.kernel.org/stable/c/689a91ff18d6448d94c1ab7c076fecdb2b668bef"},{"url":"https://git.kernel.org/stable/c/76160e04440c9698b989dbd9492a7ec4f520c9ee"},{"url":"https://git.kernel.org/stable/c/fa88161ef56e29bdaa05cc89dbc4ee221e94bfe9"},{"url":"https://git.kernel.org/stable/c/b6fe26f86a1649f84e057f3f15605b08eda15497"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-24T16:29:13.513Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"6.6.141"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"6.12.91"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.6","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.7","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.6","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.7","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.6","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.7","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.6","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.7","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.6","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.7","status":"affected","lessThan":"*","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}],"providerMetadata":{"shortName":"siemens-SADP","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","dateUpdated":"2026-10-15T01:22:13.020Z"},"x_adpType":"supplier"}]}}}