FFmpeg n7.0 is affected by a Double Free via the rkmpp_retrieve_frame function within libavcodec/rkmppdec.c.
https://github.com/ffmpeg/ffmpeg/commit/4513300989502090c4fd6560544dce399a8cd53c
https://github.com/FFmpeg/FFmpeg/blob/n7.0/libavcodec/rkmppdec.c#L466
https://gist.github.com/1047524396/7e6e47220ae2b2d2fb4611f0d8a31ec5