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High7.8Red Hat Linux

CVE-2024-31083: Red Hat Xorg-x11-server: use-after-free in procrenderaddglyphs

This Red Hat advisory covers CVE-2024-31083 in Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION, Red Hat Enterprise Linux 7 and Red Hat Enterprise Linux 8.2 Advanced Update Support.

Open the Red Hat advisory

Key facts

Vendor rating
High, CVSS 7.8
CISA KEV
Not listed (catalogue checked )
Fixed in
tigervnc-0:1.1.0-25.el6_10.13, xorg-x11-server-0:1.20.4-29.el7_9, tigervnc-0:1.8.0-33.el7_9 and 29 more below
Source published
Source revised
Listed by VulniPulse

Compiled by VulniPulse from the linked sources. How records are collected and checked.

Affected products & platforms

Red Hat LinuxRed Hat Enterprise Linux

Description

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.

Xorg server does not run with root privileges in Red Hat Enterprise Linux 8 and 9, therefore, Red Hat Enterprise Linux 8 and 9 have been rated with a Moderate severity. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Weakness: CWE-416.

Affected products named by the advisory: Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.2 Telecommunications Update Service; and 10 more.

Text from the source record.

How to fix CVE-2024-31083

Upgrade to a fixed release named by Red Hat:

  • tigervnc-0:1.1.0-25.el6_10.13
  • xorg-x11-server-0:1.20.4-29.el7_9
  • tigervnc-0:1.8.0-33.el7_9
  • tigervnc-0:1.13.1-2.el8_9.10
  • xorg-x11-server-0:1.20.11-23.el8_10
  • tigervnc-0:1.13.1-10.el8_10
  • xorg-x11-server-Xwayland-0:21.1.3-16.el8_10
  • tigervnc-0:1.9.0-15.el8_2.11
  • tigervnc-0:1.11.0-8.el8_4.10
  • tigervnc-0:1.12.0-6.el8_6.11
  • tigervnc-0:1.12.0-15.el8_8.10
  • tigervnc-0:1.13.1-8.el9_4.3
  • xorg-x11-server-Xwayland-0:23.2.7-1.el9
  • xorg-x11-server-0:1.20.11-26.el9
  • tigervnc-0:1.11.0-22.el9_0.11
  • tigervnc-0:1.12.0-14.el9_2.8
  • RHSA-2025:12751
  • RHSA-2024:1785
  • RHSA-2024:2080
  • RHSA-2024:2037
  • RHSA-2024:3258
  • RHSA-2024:3261
  • RHSA-2024:3343
  • RHSA-2024:2041
  • RHSA-2024:2042

and 7 more in the Red Hat advisory.

Vendor guidance

  • Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Support dates for the fixed release lines

All end-of-life dates for Red Hat Enterprise Linux

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