Tatsuo Sekine has reported a vulnerability in Fedora, which can be exploited locally to increase privileges via a file race condition.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/33779/fedora_im-switch_tempfile_race.txt
Source: https://packetstormsecurity.com/files/33779/fedora_im-switch_tempfile_race.txt.html