USN-2576-1 fixed a vulnerability in usb-creator. This update provides thecorresponding fix for Ubuntu 15.04.
Original advisory details:
Tavis Ormandy discovered that usb-creator was missing an authentication check. A local attacker could use this issue to gain elevated privileges.
The problem can be corrected by updating your system to the following
To update your system, please follow these instructions:
After a standard system update you need to reboot your computer to makeall the necessary changes.