FFmpeg version n5.1 to n6.1 was discovered to contain an Off-by-one Error vulnerability in libavfilter/avf_showspectrum.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.
https://github.com/ffmpeg/ffmpeg/commit/ab0fdaedd1e7224f7e84ea22fcbfaa4ca75a6c06
https://github.com/FFmpeg/FFmpeg/commit/81df787b53eb5c6433731f6eaaf7f2a94d8a8c80
https://gist.github.com/1047524396/dc2c64ffe0c3934a6176bcd2c5cf5656