Out-of-bounds Write Affecting xorg-x11-server package, versions <0:1.20.11-28.el9_6


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.36% (28th 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-ROCKY9-XORGX11SERVER-13505954
  • published9 Oct 2025
  • disclosed25 Feb 2025

Introduced: 25 Feb 2025

CVE-2025-26598  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 xorg-x11-server to version 0:1.20.11-28.el9_6 or higher.
This issue was patched in RLSA-2025:7163.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xorg-x11-server package and not the xorg-x11-server package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:9 relevant fixed versions and status.

An out-of-bounds write flaw was found in X.Org and Xwayland. The function GetBarrierDevice() searches for the pointer device based on its device ID and returns the matching value, or supposedly NULL, if no match was found. However, the code will return the last element of the list if no matching device ID is found, which can lead to out-of-bounds memory access.

CVSS Base Scores

version 3.1