A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 ESM
PolicyKit could allow unintended access.
- policykit-1: framework for managing administrative policies and privileges
USN-3934-1 fixed a vulnerability in Policykit. This update provides
the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
It was discovered that PolicyKit incorrectly relied on the fork() system
call in the Linux kernel being atomic. A local attacker could possibly use
this issue to gain access to services that have cached authorizations.
The problem can be corrected by updating your system to the following