CVE-2026-53001

Summary

In the Linux kernel, the following vulnerability has been resolved:

netfilter: xtables: restrict several matches to inet family

This is a partial revert of:

commit ab4f21e6fb1c ("netfilter: xtables: use NFPROTO_UNSPEC in more extensions")

to allow ipv4 and ipv6 only.

  • xt_mac
  • xt_owner
  • xt_physdev

These extensions are not used by ebtables in userspace.

Moreover, xt_realm is only for ipv4, since dst->tclassid is ipv4 specific.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxab4f21e6fb1c09b13c4c3cb8357babe8223471bd < 14203f9edf944b3fb63faadd62f38452421ecdfcaffected
LinuxLinuxab4f21e6fb1c09b13c4c3cb8357babe8223471bd < 7eaf9c740f33230cb224dc265f3c69f8531ff57baffected
LinuxLinuxab4f21e6fb1c09b13c4c3cb8357babe8223471bd < 9a109751b297b0f2135495749ef5a18ba31ec7d4affected
LinuxLinuxab4f21e6fb1c09b13c4c3cb8357babe8223471bd < cbeb259f31382de70a70a59ffd0e66f5e80d9818affected
LinuxLinuxab4f21e6fb1c09b13c4c3cb8357babe8223471bd < 689a91ff18d6448d94c1ab7c076fecdb2b668befaffected
LinuxLinuxab4f21e6fb1c09b13c4c3cb8357babe8223471bd < 76160e04440c9698b989dbd9492a7ec4f520c9eeaffected
LinuxLinuxab4f21e6fb1c09b13c4c3cb8357babe8223471bd < fa88161ef56e29bdaa05cc89dbc4ee221e94bfe9affected
LinuxLinuxab4f21e6fb1c09b13c4c3cb8357babe8223471bd < b6fe26f86a1649f84e057f3f15605b08eda15497affected
LinuxLinux2.6.28affected
LinuxLinux0 < 2.6.28unaffected
LinuxLinux5.10.258 <= 5.10.*unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.141 <= 6.6.*unaffected
LinuxLinux6.12.91 <= 6.12.*unaffected
LinuxLinux6.18.33 <= 6.18.*unaffected
LinuxLinux7.0.10 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References