Several integer overflow bugs were found in the way X.org parses pixmap images. It is possible for a user to gain elevated privileges by loading a specially crafted pixmap image.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/44483/FLSA-2006-168264-2.txt
Source: https://packetstormsecurity.com/files/44483/FLSA-2006-168264-2.txt.html