PT-2026-51895 · Linux · Linux

Published 2026-06-24 · Updated 2026-06-24 · CVE-2026-53001

NVD

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.

Related Identifiers

CVE-2026-53001

Affected Products

Linux

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-53001 · Security Note
• https://git.kernel.org/stable/c/14203f9edf944b3fb63faadd62f38452421ecdfc · Note
• https://git.kernel.org/stable/c/689a91ff18d6448d94c1ab7c076fecdb2b668bef · Note
• https://git.kernel.org/stable/c/fa88161ef56e29bdaa05cc89dbc4ee221e94bfe9 · Note
• https://git.kernel.org/stable/c/7eaf9c740f33230cb224dc265f3c69f8531ff57b · Note
• https://git.kernel.org/stable/c/76160e04440c9698b989dbd9492a7ec4f520c9ee · Note
• https://git.kernel.org/stable/c/cbeb259f31382de70a70a59ffd0e66f5e80d9818 · Note
• https://git.kernel.org/stable/c/9a109751b297b0f2135495749ef5a18ba31ec7d4 · Note
• https://git.kernel.org/stable/c/b6fe26f86a1649f84e057f3f15605b08eda15497 · Note