FFmpeg 2.x allows remote attackers to conduct cross-origin attacks and read arbitrary files by using the subfile protocol in an HTTP Live Streaming (HLS) M3U8 file, leading to an external HTTP request in which the URL string contains an arbitrary line of a local file.
habrahabr.ru/company/mailru/blog/274855
lists.opensuse.org/opensuse-security-announce/2016-01/msg00034.html
www.debian.org/security/2016/dsa-3506
www.openwall.com/lists/oss-security/2016/01/14/1
www.securityfocus.com/bid/80501
www.securitytracker.com/id/1034932
www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.529036
www.ubuntu.com/usn/USN-2944-1
security.gentoo.org/glsa/201606-09
security.gentoo.org/glsa/201705-08
www.kb.cert.org/vuls/id/772447