USN-1138-1 fixed a vulnerability in DBus-GLib. NetworkManager and
ModemManager required rebuilding against the updated DBus-GLib to
incorporate the changes.
Original advisory details:
It was discovered that DBus-GLib did not properly verify the access flag of
exported GObject properties under certain circumstances. A local attacker
could exploit this to bypass intended access restrictions or possibly
cause a denial of service.
The problem can be corrected by updating your system to the following