The audit system in Linux kernel 2.6.6, and other versions before 2.6.13.4, when CONFIGAUDITSYSCALL is enabled, uses an incorrect function to free namescache memory, which prevents the memory from being tracked by AUDITSYSCALL code and leads to a memory leak that allows attackers to cause a denial of service (memory consumption).

The rawsendmsg function in the Linux kernel 2.6 before 2.6.13.1 allows local users to cause a denial of service (change hardware state) or read from arbitrary memory via crafted input.