CVE-2005-1126
The SIOCGIFCONF ioctl (ifconf function) in FreeBSD 4.x through 4.11 and 5.x through 5.4 does not properly clear a buffer before using it, which allows local users to obtain portions of sensitive kernel memory.
Date published : 2005-04-16
http://lists.apple.com/archives/security-announce/2005/Oct/msg00000.html