The Bluetooth driver in Apple OS X before 10.10.2 allows attackers to execute arbitrary code in a privileged context or cause a denial of service (arbitrary-size bzero of kernel memory) via a crafted app.
http://code.google.com/p/google-security-research/issues/detail?id=136
http://lists.apple.com/archives/security-announce/2015/Jan/msg00003.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/100490