Use After Free Affecting xorg-x11-server package, versions <0:1.20.11-26.el9


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
1.84% (77th percentile)

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  • Snyk IDSNYK-ROCKY9-XORGX11SERVER-9461100
  • published18 Mar 2025
  • disclosed5 Apr 2024

Introduced: 5 Apr 2024

CVE-2024-31083  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 xorg-x11-server to version 0:1.20.11-26.el9 or higher.
This issue was patched in RLSA-2024:9122.

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.

A use-after-free vulnerability was found in the ProcRenderAddGlyphs() function of Xorg servers. This issue occurs when AllocateGlyph() is called to store new glyphs sent by the client to the X server, potentially resulting in multiple entries pointing to the same non-refcounted glyphs. Consequently, ProcRenderAddGlyphs() may free a glyph, leading to a use-after-free scenario when the same glyph pointer is subsequently accessed. This flaw allows an authenticated attacker to execute arbitrary code on the system by sending a specially crafted request.

References

CVSS Base Scores

version 3.1