Уязвимость функции _XkbSetCompatMap реализации сервера X Window System X.Org Server, позволяющая нарушителю повысить свои привилегии

A flaw was found in the X.org server. Due to improperly tracked allocation size in _XkbSetCompatMap, a local attacker may be able to trigger a buffer overflow condition via a specially crafted payload, leading to denial of service or local privilege escalation in distributions where the X.org server is run with root privileges.