USN-4905-1 fixed a vulnerability in X.Org. This update provides the corresponding update for Ubuntu 14.04 ESM.
Original advisory details:
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled certain lengths of XInput extension ChangeFeedbackControl requests. An attacker could use this issue to cause the server to crash, resulting in a denial of service, or possibly execute arbitrary code.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xdmx" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xdmx-dbgsym" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xdmx-tools" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xdmx-tools-dbgsym" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xnest" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xnest-dbgsym" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xorg-server-source" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xserver-common" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xserver-xephyr" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xserver-xephyr-dbgsym" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xserver-xorg-core" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xserver-xorg-core-dbg" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xserver-xorg-core-dbgsym" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xserver-xorg-core-udeb" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xserver-xorg-core-udeb-dbgsym" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xserver-xorg-dev" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xserver-xorg-dev-dbgsym" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xserver-xorg-xmir" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xserver-xorg-xmir-dbgsym" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xvfb" }, { "binary_version": "2:1.15.1-0ubuntu2.11+esm4", "binary_name": "xvfb-dbgsym" } ] }