Heap-based buffer overflow in the read_channel_data function in file-psp.c in the Paint Shop Pro (PSP) plugin in GIMP 2.6.11 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a PSP_COMP_RLE (aka RLE compression) image file that begins a long run count at the end of the image. NOTE: some of these details are obtained from third party information.
http://www.debian.org/security/2012/dsa-2426
http://security.gentoo.org/glsa/glsa-201209-23.xml
http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html