Use After Free Affecting xorg-x11-server-source package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

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  • Snyk IDSNYK-RHEL7-XORGX11SERVERSOURCE-8751618
  • published26 Feb 2025
  • disclosed25 Feb 2025

Introduced: 25 Feb 2025

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

How to fix?

There is no fixed version for RHEL:7 xorg-x11-server-source.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xorg-x11-server-source package and not the xorg-x11-server-source package as distributed by RHEL. See How to fix? for RHEL:7 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 Scores

version 3.1