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CVE-2026-93524medium6.9

X.Org Server XKB SetMap Key Width/Action Count Desync Out-Of-Bounds Read

Impact

A buffer overread in CheckKeySyms() in X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to leak small amounts of information from X server memory or potentially crash the X server.

Source excerpt · suse

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

x.org · xorg-x11-server

Other versions: unaffected

Version / rangeSource status
0 to before 21.1.25affected
suse version evidence

x.org · xwayland

Other versions: unaffected

Version / rangeSource status
0 to before 24.1.14affected
suse version evidence

Original source description

A buffer overread in CheckKeySyms() in X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to leak small amounts of information from X server memory or potentially crash the X server.

References