USN-6360-1 fixed a vulnerability in FLAC. This update provides the
corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and
Ubuntu 18.04 LTS.
Original advisory details:
It was discovered that FLAC incorrectly handled encoding certain files. A
remote attacker could use this issue to cause FLAC to crash, resulting in a
denial of service, or possibly execute arbitrary code.