CVE-2024-31083CWE-416

Xorg-x11-server: use-after-free in procrenderaddglyphs

High · published April 5, 2024

CVSS v3.1
7.8
EPSS
2%
Percentile
79.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01859 · 79.1th percentile
Weakness
CWE-416 · Use After Free
Published
2024-04-05T12:04Z
EPSS history
Timeline
  • 05 APR 12:04Z
    Xorg-x11-server: use-after-free in procrenderaddglyphs
    cvelistv5