Out-of-bounds Read Affecting xorg-x11-server-debugsource package, versions <0:1.20.11-34.el9_8.2


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.18% (8th percentile)

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  • Snyk IDSNYK-ROCKY9-XORGX11SERVERDEBUGSOURCE-17389466
  • published20 Jun 2026
  • disclosed5 Jun 2026

Introduced: 5 Jun 2026

NewCVE-2026-50262  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 xorg-x11-server-debugsource to version 0:1.20.11-34.el9_8.2 or higher.
This issue was patched in RLSA-2026:26610.

NVD Description

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

An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default.

CVSS Base Scores

version 3.1