Use After Free Affecting kernel-headers package, versions <0:6.1.84-99.169.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNELHEADERS-7710047
  • published20 Aug 2024
  • disclosed4 Apr 2024

Introduced: 4 Apr 2024

CVE-2024-26809  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel-headers to version 0:6.1.84-99.169.amzn2023 or higher.
This issue was patched in ALAS2023-2024-696.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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

netfilter: nft_set_pipapo: release elements in clone only from destroy path

Clone already always provides a current view of the lookup table, use it to destroy the set, otherwise it is possible to destroy elements twice.

This fix requires:

212ed75dc5fb ("netfilter: nf_tables: integrate pipapo into commit protocol")

which came after:

9827a0e6e23b ("netfilter: nft_set_pipapo: release elements in clone from abort path").

CVSS Scores

version 3.1