The br_mdb_ip_get function in net/bridge/br_multicast.c in the Linux kernel before 2.6.35-rc5 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via an IGMP packet, related to lack of a multicast table.
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7f285fa78d4b81b8458f05e77fb6b46245121b4e
openwall.com/lists/oss-security/2011/02/16/1
openwall.com/lists/oss-security/2011/02/16/14
openwall.com/lists/oss-security/2011/02/16/8
www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.35/ChangeLog-2.6.35-rc5
www.securityfocus.com/bid/41432
www.spinics.net/lists/netdev/msg134414.html
www.spinics.net/lists/netdev/msg134444.html