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

Severity

 Recommended
medium

Based on AlmaLinux security rating

    Threat Intelligence

    EPSS
    0.04% (12th percentile)

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  • Snyk ID SNYK-ALMALINUX9-XORGX11SERVERXORG-8383738
  • published 18 Nov 2024
  • disclosed 12 Nov 2024
Report a new vulnerability Found a mistake?

Introduced: 12 Nov 2024

New CVE-2024-31083 Open this link in a new tab
CWE-416 Open this link in a new tab

How to fix?

Upgrade AlmaLinux:9 xorg-x11-server-Xorg to version 0:1.20.11-26.el9 or higher.
This issue was patched in ALSA-2024:9122.

NVD Description

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

version 3.1
Expand this section

SUSE

7.8 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

Red Hat

7.8 high