🛡️ CVE-2024-26643 — debian-linux

🟠 CVSS 7.8 — High ✅ No Known Exploit CWE-667 NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout

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

netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout

While the rhashtable set gc runs asynchronously, a race allows it to

collect elements from anonymous sets with timeouts while it is being

released from the commit path.

Mingi Cho originally reported this issue in a different path in 6.1.x

with a pipapo set with low timeouts which is not possible upstream since

7395dfacfff6 ("netfilter: nf_tables: use timestamp to check for set

element timeout").

Fix this by setting on the dead flag for anonymous sets to skip async gc

in this case.

According to 08e4c8c5919f ("netfilter: nf_tables: mark newset as dead on

transaction abort"), Florian plans to accelerate abort path by releasing

objects via workqueue, therefore, this sets on the dead flag for abort

path too.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

CVE-2024-26643 is recorded against 3 packages.

  • debian-linux
  • kernel (from 6.5.0 up to 6.7.12)
  • linux-kernel (from 6.7 up to 6.7.12)

Timeline and source

Published on 21 March 2024 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org

CVE-2024-26643 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-667
Public Exploit ✅ No
Source NVD
Published 2024-03-21
Updated 2026-08-12
Modified 2026-08-04

Affected Packages

Software From version Fixed in
debian-linux — —
kernel 6.5.0 6.7.12
linux-kernel 6.7 6.7.12

References

Similar Threats

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