USN-5244-2: DBus vulnerability

USN-5244-2: DBus vulnerability

USN-5244-1 fixed a vulnerability in DBus. This update provides
the corresponding update for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.

Original advisory details:

Daniel Onaca discovered that DBus contained a use-after-free vulnerability,
caused by the incorrect handling of usernames sharing the same UID. An
attacker could possibly use this issue to cause DBus to crash, resulting
in a denial of service.
Source: USN-5244-2: DBus vulnerability