Provide references for CVE-2015-6820.
Where can I find more information about CVE-2015-6820?
References are available at: http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=79a98294da6cd85f8c86b34764c5e0c43b09eea3, http://www.ubuntu.com/usn/USN-2944-1, https://lists.debian.org/debian-lts-announce/2018/12/msg00009.html, http://www.securitytracker.com/id/1033483, http://ffmpeg.org/security.html.