CVE-2026-93520

The X.Org X server and XWayland are vulnerable to a heap buffer overflow due to mismatching size calculations between XkbAllocNames and ChangeKeycodeRange . Specifically, key name memory is allocated with an insufficient buffer size compared to the maximum supported range in the X Keyboard Extens...

EUVD-2026-112135

A heap buffer overflow caused by mismatching size calculations between XkbAllocNames and ChangeKeycodeRange in X.org X server before 2.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context...