Ubuntu 14.04 LTS USN-2643-1 Critical: Privilege Escalation

The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: linux-image-3.13.0-55-generic 3.13.0-55.92 linux-image-3.13.0-55-generic-lpae 3.13.0-55.92 linux-image-3.13.0-55-lowlatency 3.13.0-55.92 linux-image-3.13.0-55-powerpc-e500 3.13.0-55.92 linux-image-3.13.0-55-powerpc-e500mc 3.13.0-55.92 linux-image-3.13.0-55-powerpc-smp 3.13.0-55.92 linux-image-3.13.0-55-powerpc64-emb 3.13.0-55.92 linux-image-3.13.0-55-powerpc64-smp 3.13.0-55.92 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-server, linux-powerpc), a standard system upgrade will automatically perform this as well.