USN-1919-1: Linux kernel vulnerability
29 July 2013
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 13.04
The system could be made to crash or run programs as an administrator.
- linux - Linux kernel
Kees Cook discovered a format string vulnerability in the Broadcom B43 wireless driver for the Linux kernel. A local user could exploit this flaw to gain administrative privileges. (CVE-2013-2852)
Marcus Moeller and Ken Fallon discovered that the CIFS incorrectly built certain paths. A local attacker with access to a CIFS partition could exploit this to crash the system, leading to a denial of service. (CVE-2013-4247)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
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.