The __inet6_check_established function in net/ipv6/inet6_hashtables.c in the Linux kernel before 2.6.29, when Network Namespace Support (aka NET_NS) is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via vectors involving IPv6 packets.
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3f53a38131a4e7a053c0aa060aba0411242fb6b9
lists.opensuse.org/opensuse-security-announce/2009-06/msg00002.html
secunia.com/advisories/35387
secunia.com/advisories/35656
www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29
www.mandriva.com/security/advisories?name=MDVSA-2009:135
www.securityfocus.com/bid/34602
www.ubuntu.com/usn/usn-793-1
xorl.wordpress.com/2009/04/21/linux-kernel-net_ns-ipv6-null-pointer-dereference/