Out-of-bounds Write Affecting libX11-debuginfo package, versions <0:1.8.10-2.amzn2023.0.2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.2% (9th 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-LIBX11DEBUGINFO-20851649
  • published13 Oct 2026
  • disclosed21 Sept 2026

Introduced: 21 Sep 2026

NewCVE-2026-88806  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 libX11-debuginfo to version 0:1.8.10-2.amzn2023.0.2 or higher.
This issue was patched in ALAS2023-2026-3179.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libX11-debuginfo package and not the libX11-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.

CVSS Base Scores

version 3.1