---
id: CVE-2026-53001
title: |-
  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 extens…
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 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: 0.00166
epssPercentile: 0.05203
ingestedAt: '2026-07-11T15:13:30.688Z'
---

## Overview

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

- `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`

## Remediation

Upgrade past the affected range:

- `linux_kernel 7.0.10`