After a standard system upgrade you should restart your session to
effect the necessary changes.
Two integer overflows have been discovered in the XPM image loader of
the GDK pixbuf library. By tricking an user into opening a specially
crafted XPM image with any Gnome desktop application that uses this
library, this could be exploited to execute arbitrary code with the
privileges of the user running the application.
Additionally, specially crafted XPM images could cause an endless loop
in the image loader, which could be exploited to cause applications
trying to open that image to hang. (CVE-2005-2975)