Homepage

Out-of-bounds Read The advisory has been revoked - it doesn't affect any version of package kernel  (opens in a new tab)

Threat Intelligence

EPSS
0.08% (23rd 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 Learn

Learn about Out-of-bounds Read vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-CENTOS10-KERNEL-15903547
  • published5 Apr 2026
  • disclosed3 Apr 2026
Report a new vulnerability Found a mistake?

Introduced: 3 Apr 2026

CVE-2026-23455  (opens in a new tab)
CWE-125  (opens in a new tab)

Amendment

The Centos security team deemed this advisory irrelevant for Centos:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Centos.

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

netfilter: nf_conntrack_h323: check for zero length in DecodeQ931()

In DecodeQ931(), the UserUserIE code path reads a 16-bit length from the packet, then decrements it by 1 to skip the protocol discriminator byte before passing it to DecodeH323_UserInformation(). If the encoded length is 0, the decrement wraps to -1, which is then passed as a large value to the decoder, leading to an out-of-bounds read.

Add a check to ensure len is positive after the decrement.