Use After Free Affecting xorg-x11-server-Xwayland package, versions <0:24.1.9-4.el10_2.2


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.14% (4th percentile)

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  • Snyk IDSNYK-ROCKY10-XORGX11SERVERXWAYLAND-17458501
  • published25 Jun 2026
  • disclosed5 Jun 2026

Introduced: 5 Jun 2026

NewCVE-2026-50263  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:10 xorg-x11-server-Xwayland to version 0:24.1.9-4.el10_2.2 or higher.
This issue was patched in RLSA-2026:26566.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xorg-x11-server-Xwayland package and not the xorg-x11-server-Xwayland package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:10 relevant fixed versions and status.

A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure.

CVSS Base Scores

version 3.1