The udp_queue_rcv_skb function in net/ipv4/udp.c in a certain Red Hat build of the Linux kernel 2.6.18 in Red Hat Enterprise Linux (RHEL) 5 allows attackers to cause a denial of service (deadlock and system hang) by sending UDP traffic to a socket that has a crafted socket filter, a related issue to CVE-2010-4158.
http://secunia.com/advisories/42789
http://secunia.com/advisories/46397
http://www.redhat.com/support/errata/RHSA-2011-0004.html
http://www.securityfocus.com/archive/1/514845
http://www.securityfocus.com/archive/1/520102/100/0/threaded
http://www.spinics.net/lists/netdev/msg146404.html
http://www.vmware.com/security/advisories/VMSA-2011-0012.html
http://www.vupen.com/english/advisories/2011/0024
https://bugzilla.redhat.com/show_bug.cgi?id=651698