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Name
CVE-2026-34002
Description
A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB (X Keyboard Extension) modifier map handling. An attacker with access to the X11 server can exploit this by sending a malformed request, which causes the server to read beyond its intended memory boundaries. This can lead to the exposure of sensitive information or cause the server to crash, resulting in a denial of service.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
https://access.redhat.com/security/cve/CVE-2026-34002Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2451112Issue Tracking
Analysis#
Vulnerability Ratings#
6.1
CVSSv31
9.1
CVSSv31
NaN
other
Others affected components#
Resolved with patches#
xserver-xorg (yocto:scarthgap)
#
Title
Author
Resolve
1
xkb: Fix out-of-bounds read in CheckModifierMap()
Olivier Fourdan <ofourdan@redhat.com>
CVE-2026-34002
xwayland (yocto:scarthgap)
#
Title
Author
Resolve
1
xkb: Fix out-of-bounds read in CheckModifierMap()
Olivier Fourdan <ofourdan@redhat.com>
CVE-2026-34002