Ubuntu Update for xserver-xorg-video-qxl USN-1714-1

Please Install the Updated Packages.
It was discovered that the QXL graphics driver incorrectly handled terminated connections. An attacker that could connect to a guest using SPICE and the QXL graphics driver could cause the guest to hang or crash, resulting in a denial of service.
xserver-xorg-video-qxl on Ubuntu 12.04 LTS , Ubuntu 11.10