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Affected Component
Analysis
xserver-xorg
Patched
Name
CVE-2026-33999
Description
A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of service (DoS) or other severe impacts.
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
xkb: fix buffer re-use in _XkbSetCompatMap
Peter Harris <pharris2@rocketsoftware.com>
CVE-2026-33999