Ubuntu Security Notice USN-3737-1
August 13, 2018
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
GDM could be made to crash or run programs as the administrator.
- gdm3: GNOME Display Manager
A use-after-free was discovered in GDM. A local user could exploit this to
cause a denial of service, or potentially execute arbitrary code as the
The problem can be corrected by updating your system to the following
Ubuntu 18.04 LTS:
After a standard system update you need to reboot your computer to make
all the necessary changes.