USN-1959-1: RealtimeKit vulnerability

Ubuntu Security Notice USN-1959-1

18th September, 2013

rtkit vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 13.04
  • Ubuntu 12.10
  • Ubuntu 12.04 LTS


RealtimeKit could be tricked into bypassing polkit authorizations.

Software description

  • rtkit - Realtime Policy and Watchdog Daemon


It was discovered that RealtimeKit was using polkit in an unsafe manner. A
local attacker could possibly use this issue to bypass intended polkit

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 13.04:
rtkit 0.10-2ubuntu0.13.04.1
Ubuntu 12.10:
rtkit 0.10-2ubuntu0.12.10.1
Ubuntu 12.04 LTS:
rtkit 0.10-2ubuntu0.12.04.1

To update your system, please follow these instructions:

After a standard system update you need to reboot your computer to make
all the necessary changes.