Noki

A double free occurs in the MP4Box component within the `gf isom nalu sample rewrite()` function located in the `src/isomedia/avc ext.c` file. This issue is triggered by the manipulation of the `nalu out bs` argument and can be exploited on a local host. A double free is a memory corruption issue that occurs when an application attempts to free the same memory location twice.

A heap-based buffer overflow occurs in the MP4Box component within the `sgpd del entry()` function located in the `src/isomedia/box code base.c` file. This issue is triggered by the manipulation of the `data` argument and requires local access to be exploited.