* denial of service due to unchecked malloc in client authentication
* integer overflows calculating memory needs for requests
* out of bounds access due to not validating length or offset values in requests

T'en foutrais des torgnoles moi

Introduced in X11R1 (1987).
Introduced in X11R4 (1989).
Introduced in X11R6.0 (1994).

T'EN FOUTRAIS DES TORGNOLES J'AI DIT