Gentoo Linux Security Advisory GLSA 200710-16 – Aaron Plattner discovered a buffer overflow in the compNewPixmap() function when copying data from a large pixel depth pixmap into a smaller pixel depth pixmap. Versions less than 1.3.0.0-r1 are affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/60123/glsa-200710-16.txt
Source: https://packetstormsecurity.com/files/60123/Gentoo-Linux-Security-Advisory-200710-16.html