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Use After Free The advisory has been revoked - it doesn't affect any version of package tigervnc  (opens in a new tab)

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EPSS
1.86% (78th percentile)

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  • Snyk IDSNYK-RHEL9-TIGERVNC-10629579
  • published5 Jul 2025
  • disclosed3 Apr 2024
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Introduced: 3 Apr 2024

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

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tigervnc package and not the tigervnc package as distributed by RHEL.

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.