CVE-2026-93520 X.Org Server XKB ChangeKeycodeRange Heap Out-of-Bounds Write

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...