CVE-2026-93519

X.Org Server XFixes Pointer Barrier Event List Buffer Overflow

State: Published
Severity: 7.8 High
Published: Oct 28, 2026
Updated: Oct 28, 2026
Reserved: Sep 18, 2026

Description

A buffer overflow when handling pointer barriers in the XFIXES extension in X.Org X server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	suse

Weaknesses

CWE-122 Heap-based buffer overflow

Affected Products

Product	Versions
xorg-x11-serverx.org	before 21.1.25Affected
xwaylandx.orgg	before 24.1.14Affected

References

https://gitlab.freedesktop.org/xorg/xserver/-/commit/1f42cc1f00d9c6d46978ae82dba8a52f4d902369patch

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