An issue was discovered in Bento4 1.5.1-627. There is a heap-based buffer over-read in AP4_AvccAtom::Create in Core/Ap4AvccAtom.cpp, as demonstrated by mp42hls.
{ "binaries": [ { "binary_version": "19.0.0+ds1-2", "binary_name": "kodi-inputstream-adaptive" } ] }
{ "binaries": [ { "binary_version": "20.3.18+ds-1build1", "binary_name": "kodi-inputstream-adaptive" } ] }
{ "binaries": [ { "binary_version": "21.5.9+ds-1", "binary_name": "kodi-inputstream-adaptive" } ] }