Multiple stack-based buffer overflows in the Near Field Communication Controller Interface (NCI) in the Linux kernel before 3.4.5 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via incoming frames with crafted length fields.
https://github.com/torvalds/linux/commit/67de956ff5dc1d4f321e16cfbd63f5be3b691b43
http://www.openwall.com/lists/oss-security/2012/06/27/9
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5
http://ubuntu.com/usn/usn-1529-1