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Use After Free Affecting xorg-server package, versions <2:1.20.11-1+deb11u13

low

Snyk CVSS

      Threat Intelligence

      EPSS 0.05% (16th percentile)
    Expand this section
    SUSE
    7.8 high
    Expand this section
    Red Hat
    7.8 high

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    • Snyk ID SNYK-DEBIAN11-XORGSERVER-6531280
    • published 4 Apr 2024
    • disclosed 5 Apr 2024
    Report a new vulnerability Found a mistake?

    Introduced: 4 Apr 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 Debian:11 xorg-server to version 2:1.20.11-1+deb11u13 or higher.

    NVD Description

    Note: Versions mentioned in the description apply only to the upstream xorg-server package and not the xorg-server package as distributed by Debian. See How to fix? for Debian:11 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