Use After Free Affecting xorg-x11-server-devel package, versions <0:1.20.11-28.el9_6


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.39% (34th percentile)

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  • Snyk IDSNYK-ORACLE9-XORGX11SERVERDEVEL-10242371
  • published24 May 2025
  • disclosed25 Feb 2025

Introduced: 25 Feb 2025

CVE-2025-26601  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:9 xorg-x11-server-devel to version 0:1.20.11-28.el9_6 or higher.
This issue was patched in ELSA-2025-7163.

NVD Description

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

A use-after-free flaw was found in X.Org and Xwayland. When changing an alarm, the values of the change mask are evaluated one after the other, changing the trigger values as requested, and eventually, SyncInitTrigger() is called. If one of the changes triggers an error, the function will return early, not adding the new sync object, possibly causing a use-after-free when the alarm eventually triggers.

CVSS Base Scores

version 3.1