Memory leak in mm/hugetlb.c in the Linux kernel before 3.4.2 allows local users to cause a denial of service (memory consumption or system crash) via invalid MAP_HUGETLB mmap operations.
https://bugzilla.redhat.com/show_bug.cgi?id=824345
http://www.ubuntu.com/usn/USN-1535-1
http://www.ubuntu.com/usn/USN-1515-1
http://www.openwall.com/lists/oss-security/2012/05/23/14