MPlayer allows remote attackers to cause a denial of service (application crash) via (1) a malformed AAC file, as demonstrated by lol-vlc.aac; or (2) a malformed Ogg Media (OGM) file, as demonstrated by lol-ffplay.ogm, different vectors than CVE-2007-6718.
http://www.ubuntu.com/usn/USN-734-1