According to Canonical, a vulnerability was discovered recently in the memory manager of the Linux kernel packages of the aforementioned Ubuntu OSes that could be used by a local attacker to crash the system using a Denial of Service (DoS) attack. The security flaw was discovered by Jan Stancek. The kernel vulnerability has been fully documented at CVE-2016-3070, and it affects multiple Linux kernel versions, including the long-term supported Linux 4.4, Linux 4.2, as well as Linux 3.13 and 3.19, which means that it could affects other GNU/Linux distributions that are using these kernels.