kernel is vulnerable to denial of service. A divide-by-zero flaw was found in the Linux kernel’s igmp_heard_query() function. An attacker able to send certain IGMP (Internet Group Management Protocol) packets to a target system could use this flaw to cause a denial of service.
bugs.debian.org/cgi-bin/bugreport.cgi?bug=654876
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a8c1f65c79cbbb2f7da782d4c9d15639a9b94b27
www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.1
www.openwall.com/lists/oss-security/2012/01/10/5
access.redhat.com/errata/RHSA-2012:0107
access.redhat.com/kb/docs/DOC-67874
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=772867
github.com/torvalds/linux/commit/25c413ad0029ea86008234be28aee33456e53e5b
github.com/torvalds/linux/commit/a8c1f65c79cbbb2f7da782d4c9d15639a9b94b27