A heap-based buffer overflow flaw was found in the way Adobe Photoshop(tm) PSD plug-in of Gimp, the GNU Image Manipulation Program, performed decoding of headers, when loading certain Adobe Photoshop image files. A remote attacker could provide a specially-crafted PSD image file that, when opened in Gimp would lead to PSD plug-in crash or, potentially, arbitrary code execution with the privileges of the user running gimp executable.
This issue was found by Jan Lieskovsky of the Red Hat Security Response Team