The Broadcom BCM4325 and BCM4329 Wi-Fi chips, as used in certain Acer, Apple, Asus, Ford, HTC, Kyocera, LG, Malata, Motorola, Nokia, Pantech, Samsung, and Sony products, allow remote attackers to cause a denial of service (out-of-bounds read and Wi-Fi outage) via an RSN 802.11i information element.
http://www.kb.cert.org/vuls/id/160027
http://support.apple.com/kb/HT5643
http://support.apple.com/kb/HT5642
http://lists.apple.com/archives/security-announce/2013/Jan/msg00001.html
http://lists.apple.com/archives/security-announce/2013/Jan/msg00000.html