---
id: CVE-2026-31416
title: 'netfilter: nfnetlink_log: account for netlink header size'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  netfilter: nfnetlink_log: account for netlink header size

  This is a followup to an old bug fix: NLMSG_DONE needs to account
  for the netlink header size, not just the a…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a <
    4ec216410fac9de83c99177a160ebb8d42fad075
  - >-
    Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a <
    09883bf257f4243ed5a1fd35078ec6f0d0f3696a
  - >-
    Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a <
    761b45c661af48da6a065868d59ab1e1f64fd9b6
  - >-
    Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a <
    607245c4dbb86d9a10dd8388da0fb82170a99b61
  - >-
    Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a <
    6b419700e459fbf707ca1543b7c1b57a60fedb73
  - >-
    Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a <
    88a8f56e6276f616baad4274c6b8e4683e26e520
  - >-
    Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a <
    f08ffa3e1c8e36b6131f69c5eb23700c28cbd262
  - >-
    Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a <
    6d52a4a0520a6696bdde51caa11f2d6821cd0c01
  - Linux 3a758a2b78da2f49f7165678faf999e946a0c4b5
  - Linux 131172845aa2c804ffa9423455aee585061ea35e
  - Linux b1fef6b81871a396f3b8702077333e769673c87b
  - Linux add9183d993c12fb61ce0a674a424341d5be5b36
  - Linux >= 3.10.61 < 3.11
  - Linux >= 3.12.34 < 3.13
  - Linux >= 3.14.25 < 3.15
  - Linux >= 3.17.4 < 3.18
  - Linux 3.18
published: '2026-04-13'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T08:46:52.211Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-31416'
references:
  - url: 'https://git.kernel.org/stable/c/4ec216410fac9de83c99177a160ebb8d42fad075'
  - url: 'https://git.kernel.org/stable/c/09883bf257f4243ed5a1fd35078ec6f0d0f3696a'
  - url: 'https://git.kernel.org/stable/c/761b45c661af48da6a065868d59ab1e1f64fd9b6'
  - url: 'https://git.kernel.org/stable/c/607245c4dbb86d9a10dd8388da0fb82170a99b61'
  - url: 'https://git.kernel.org/stable/c/6b419700e459fbf707ca1543b7c1b57a60fedb73'
  - url: 'https://git.kernel.org/stable/c/88a8f56e6276f616baad4274c6b8e4683e26e520'
  - url: 'https://git.kernel.org/stable/c/f08ffa3e1c8e36b6131f69c5eb23700c28cbd262'
  - url: 'https://git.kernel.org/stable/c/6d52a4a0520a6696bdde51caa11f2d6821cd0c01'
tags:
  - cve.org
epss: 0.00171
epssPercentile: 0.05623
ingestedAt: '2026-09-08T15:33:26.991Z'
---

## Overview

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

netfilter: nfnetlink_log: account for netlink header size

This is a followup to an old bug fix: NLMSG_DONE needs to account
for the netlink header size, not just the attribute size.

This can result in a WARN splat + drop of the netlink message,
but other than this there are no ill effects.

## Affected

- `Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a < 4ec216410fac9de83c99177a160ebb8d42fad075`
- `Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a < 09883bf257f4243ed5a1fd35078ec6f0d0f3696a`
- `Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a < 761b45c661af48da6a065868d59ab1e1f64fd9b6`
- `Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a < 607245c4dbb86d9a10dd8388da0fb82170a99b61`
- `Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a < 6b419700e459fbf707ca1543b7c1b57a60fedb73`
- `Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a < 88a8f56e6276f616baad4274c6b8e4683e26e520`
- `Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a < f08ffa3e1c8e36b6131f69c5eb23700c28cbd262`
- `Linux >= 9dfa1dfe4d5e5e66a991321ab08afe69759d797a < 6d52a4a0520a6696bdde51caa11f2d6821cd0c01`
- `Linux 3a758a2b78da2f49f7165678faf999e946a0c4b5`
- `Linux 131172845aa2c804ffa9423455aee585061ea35e`
- `Linux b1fef6b81871a396f3b8702077333e769673c87b`
- `Linux add9183d993c12fb61ce0a674a424341d5be5b36`
- `Linux >= 3.10.61 < 3.11`
- `Linux >= 3.12.34 < 3.13`
- `Linux >= 3.14.25 < 3.15`
- `Linux >= 3.17.4 < 3.18`
- `Linux 3.18`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.