CVE-2007-4686
Integer signedness error in the ttioctl function in bsd/kern/tty.c in the xnu kernel in Apple Mac OS X 10.4 through 10.4.10 allows local users to cause a denial of service (system shutdown) or gain privileges via a crafted TIOCSETD ioctl request.
Date published : 2007-11-14
http://lists.apple.com/archives/security-announce/2007/Nov/msg00002.html