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Affected Component
Analysis
xserver-xorg
Patched
Name
CVE-2026-34001
Description
A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence() function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially enabling memory corruption. This could result in a denial of service or further compromise of the system.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
Analysis#
Vulnerability Ratings#
7.8
CVSSv31
NaN
other
Others affected components#
Resolved with patches#
xserver-xorg (yocto:scarthgap)
#
Title
Author
Resolve
1
miext/sync: Fix use-after-free in miSyncTriggerFence()
Olivier Fourdan <ofourdan@redhat.com>
CVE-2026-34001