From secunia security advisory at $URL: Description: The vulnerability is caused due to an error within the "igmp_heard_query()" function (net/ipv4/igmp.c) and can be exploited to cause a kernel crash via specially crafted IGMP queries. Solution: Fixed in the GIT repository. http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=a8c1f65c79cbbb2f7da782d4c9d15639a9b94b27
There are no longer any 2.x or <3.2.x kernels available in the repository with the exception of sys-kernel/xbox-sources which is unsupported by security.