An error due to the TASKSTATS netlink interface (kernel/taskstats.c) allowing a process to register multiple listeners for exit statistics, which can be exploited to cause the kernel to consume memory and CPU resources resulting in a DoS.
Original Advisory: http://seclists.org/oss-sec/2011/q2/664 Solution: Fixed in version version 2.6.39.3 and 2.6.35.14