CVE-2026-53001
netfilter: xtables: restrict several matches to inet family
- State
- Published
- Severity
- Not scored
- Published
- Jun 24, 2026
- Updated
- Oct 15, 2026
- Reserved
- Jun 9, 2026
Description
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.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
LinuxLinux |
|
LinuxLinux |
|
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
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