Improper Update of Reference Count Affecting kernel-tools-debuginfo package, versions <1:6.1.168-202.320.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.02% (6th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2023-KERNELTOOLSDEBUGINFO-16625466
  • published10 May 2026
  • disclosed25 Mar 2026

Introduced: 25 Mar 2026

CVE-2026-23391  (opens in a new tab)
CWE-911  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel-tools-debuginfo to version 1:6.1.168-202.320.amzn2023 or higher.
This issue was patched in ALAS2023-2026-1681.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-tools-debuginfo package and not the kernel-tools-debuginfo 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: xt_CT: drop pending enqueued packets on template removal

Templates refer to objects that can go away while packets are sitting in nfqueue refer to:

  • helper, this can be an issue on module removal.
  • timeout policy, nfnetlink_cttimeout might remove it.

The use of templates with zone and event cache filter are safe, since this just copies values.

Flush these enqueued packets in case the template rule gets removed.

CVSS Base Scores

version 3.1