Integer overflow in the mov_build_index function in libavformat/mov.c in FFmpeg before 2.8.8, 3.0.x before 3.0.3 and 3.1.x before 3.1.1 allows remote attackers to have unspecified impact via vectors involving sample size. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-6164
