Multiple memory leaks in XNU 1228.3.13 and earlier on Apple Mac OS X 10.5.6 and earlier allow local users to cause a denial of service (kernel memory consumption) via a crafted (1) SYS_add_profil or (2) SYS___mac_getfsstat system call.
secunia.com/advisories/34424
www.digit-labs.org/files/exploits/xnu-macfsstat-leak.c
www.digit-labs.org/files/exploits/xnu-profil-leak.c
www.informationweek.com/news/hardware/mac/showArticle.jhtml?articleID=216401181
www.securityfocus.com/bid/34202
www.exploit-db.com/exploits/8263
www.exploit-db.com/exploits/8264