CVE-2013-4205 on Ubuntu 12.04 LTS (precise) - medium.
Description:
Memory leak in the unshare_userns function in kernel/user_namespace.c in the Linux kernel before 3.10.6 allows local users to cause a denial of service (memory consumption) via an invalid CLONE_NEWUSER unshare call. A memory leak was discovered in the user namespace facility of the Linux kernel. A local user could cause a denial of service (memory consumption) via the CLONE_NEWUSER unshare call.