Integer overflow in plug-ins/common/psd.c in the Adobe Photoshop PSD plugin in GIMP 2.2.13 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted channels header value in a PSD image file, which triggers a heap-based buffer overflow, a different vulnerability than CVE-2009-3909.
https://bugzilla.redhat.com/show_bug.cgi?id=838941
https://bugzilla.redhat.com/attachment.cgi?id=603059&action=diff
http://www.openwall.com/lists/oss-security/2012/08/20/6