Ubuntu Security Notice USN-1815-1
2nd May, 2013
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 13.04
Several security issues were fixed in the kernel.
- linux - Linux kernel
Andy Lutomirski discover an error in the Linux kernel's credential handling
on unix sockets. A local user could exploit this flaw to gain
administrative privileges. (CVE-2013-1979)
Andy Lutomirski discovered a privilege escalation in the Linux kernel's
user namespaces. A local user could exploit the flaw to gain administrative
The problem can be corrected by updating your system to the following package version:
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.