Integer signedness error in the parse_machfile function in the mach-o loader (mach_loader.c) for the Darwin Kernel as used in Mac OS X 10.3.7, and other versions before 10.3.9, allows local users to cause a denial of service (CPU consumption) via a crafted mach-o header.
https://exchange.xforce.ibmcloud.com/vulnerabilities/18979
http://www.vupen.com/english/advisories/2005/0041
http://www.ciac.org/ciac/bulletins/p-185.shtml
http://securitytracker.com/id?1013735
http://securitytracker.com/id?1012941
http://secunia.com/advisories/13902
http://marc.info/?l=bugtraq&m=110616533903671&w=2
http://lists.apple.com/archives/security-announce/2005/Apr/msg00000.html