Wi-Fi in Apple iOS before 4.3 and Apple TV before 4.2 does not properly perform bounds checking for Wi-Fi frames, which allows remote attackers to cause a denial of service (device reset) via unspecified traffic on the local wireless network.
https://exchange.xforce.ibmcloud.com/vulnerabilities/65998
http://www.securitytracker.com/id?1025182
http://www.securityfocus.com/bid/46813
http://support.apple.com/kb/HT4565
http://support.apple.com/kb/HT4564
http://lists.apple.com/archives/security-announce/2011//Mar/msg00005.html
http://lists.apple.com/archives/security-announce/2011//Mar/msg00003.html