The Unity Settings Daemon before 14.04.0+14.04.20150825-0ubuntu2 and 15.04.x before 15.04.1+15.04.20150408-0ubuntu1.2 does not properly detect if the screen is locked, which allows physically proximate attackers to mount removable media while the screen is locked as demonstrated by inserting a USB thumb drive.
| Software | From | Fixed in |
|---|---|---|
| canonical / ubuntu_linux | 14.04 | 14.04.x |
| canonical / ubuntu_linux | 15.04 | 15.04.x |