The Bluetooth RFCOMM implementation in the Linux kernel before 3.6 does not properly initialize certain structures, which allows local users to obtain sensitive information from kernel memory via a crafted application.
https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.6.bz2
https://github.com/torvalds/linux/commit/f9432c5ec8b1e9a09b9b0e5569e3c73db8de432a
https://github.com/torvalds/linux/commit/9ad2de43f1aee7e7274a4e0d41465489299e344b
https://github.com/torvalds/linux/commit/9344a972961d1a6d2c04d9008b13617bcb6ec2ef
http://www.ubuntu.com/usn/USN-1808-1
http://www.ubuntu.com/usn/USN-1805-1
http://www.openwall.com/lists/oss-security/2013/03/05/13