FFmpeg n6.1.1 is Integer Overflow. The vulnerability exists in the parse_options function of sbgdec.c within the libavformat module. When parsing certain options, the software does not adequately validate the input. This allows for negative duration values to be accepted without proper bounds checking.
https://github.com/ffmpeg/ffmpeg/commit/0bed22d597b78999151e3bde0768b7fe763fc2a6
https://github.com/FFmpeg/FFmpeg/blob/n6.1.1/libavformat/sbgdec.c#L389
https://gist.github.com/1047524396/1e72f170d58c2547ebd4db4cdf6cfabf