CVE-2011-1132
The IPv6 implementation in the kernel in Apple Mac OS X before 10.6.8 allows local users to cause a denial of service (NULL pointer dereference and reboot) via vectors involving socket options.
Date published : 2011-06-24
http://lists.apple.com/archives/security-announce/2011//Jun/msg00000.html
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html