Code: static void xfrm6_tunnel_spi_fini(void)
{
	kmem_cache_destroy(xfrm6_tunnel_spi_kmem);
}

Vulnerability Type: DoS 
CWE ID: CWE-362
Summary: The tunnels implementation in the Linux kernel before 2.6.34, when tunnel functionality is configured as a module, allows remote attackers to cause a denial of service (OOPS) by sending a packet during module loading.
Commit Message: tunnels: fix netns vs proto registration ordering

Same stuff as in ip_gre patch: receive hook can be called before netns
setup is done, oopsing in net_generic().

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>