Ubuntu Security Notice 3034-2 – USN-3034-1 fixed a vulnerability in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 LTS. Jan Stancek discovered that the Linux kernel’s memory manager did not properly handle moving pages mapped by the asynchronous I/O ring buffer to the other nodes. A local attacker could use this to cause a denial of service. Various other issues were also addressed.