{"id":"CVE-2026-53001","title":"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 extens…","summary":"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 extens…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 2.6.28, < 5.10.258","linux_kernel >= 5.11, < 5.15.209","linux_kernel >= 5.16, < 6.1.175","linux_kernel >= 6.2, < 6.6.141","linux_kernel >= 6.7, < 6.12.91","linux_kernel >= 6.13, < 6.18.33","linux_kernel >= 6.19, < 7.0.10"],"patched":["linux_kernel 7.0.10"],"published":"2026-06-24","updated":"2026-09-08","sourceUpdated":"2026-09-08T09:18:13.177","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53001","references":[{"url":"https://git.kernel.org/stable/c/14203f9edf944b3fb63faadd62f38452421ecdfc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/689a91ff18d6448d94c1ab7c076fecdb2b668bef","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/76160e04440c9698b989dbd9492a7ec4f520c9ee","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7eaf9c740f33230cb224dc265f3c69f8531ff57b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9a109751b297b0f2135495749ef5a18ba31ec7d4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b6fe26f86a1649f84e057f3f15605b08eda15497","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cbeb259f31382de70a70a59ffd0e66f5e80d9818","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fa88161ef56e29bdaa05cc89dbc4ee221e94bfe9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00125,"epssPercentile":0.02564,"ingestedAt":"2026-07-11T15:13:30.688Z","slug":"CVE-2026-53001","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `linux_kernel >= 2.6.28, < 5.10.258`\n- `linux_kernel >= 5.11, < 5.15.209`\n- `linux_kernel >= 5.16, < 6.1.175`\n- `linux_kernel >= 6.2, < 6.6.141`\n- `linux_kernel >= 6.7, < 6.12.91`\n- `linux_kernel >= 6.13, < 6.18.33`\n- `linux_kernel >= 6.19, < 7.0.10`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 7.0.10`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":5313,"id":"CVE-2026-53001","ts":1788887264613,"field":"cvss","old":null,"new":"5.5"},{"seq":5312,"id":"CVE-2026-53001","ts":1788887264613,"field":"severity","old":"none","new":"medium"},{"seq":4196,"id":"CVE-2026-53001","ts":1788886379429,"field":"cvss","old":"5.5","new":null},{"seq":4195,"id":"CVE-2026-53001","ts":1788886379429,"field":"severity","old":"medium","new":"none"},{"seq":2957,"id":"CVE-2026-53001","ts":1788883044543,"field":"cvss","old":null,"new":"5.5"},{"seq":2956,"id":"CVE-2026-53001","ts":1788883044543,"field":"severity","old":"none","new":"medium"},{"seq":1986,"id":"CVE-2026-53001","ts":1788882448741,"field":"cvss","old":"5.5","new":null},{"seq":1985,"id":"CVE-2026-53001","ts":1788882448741,"field":"severity","old":"medium","new":"none"},{"seq":255,"id":"CVE-2026-53001","ts":1788881642890,"field":"cvss","old":null,"new":"5.5"},{"seq":254,"id":"CVE-2026-53001","ts":1788881642890,"field":"severity","old":"none","new":"medium"}]}