NULL Pointer Dereference
There is a Null Pointer Dereference in the function "filter_core/filter_pck.c:gf_filter_pck_new_alloc_internal" in GPAC through 1.0.1. The "pid" comes from function "av1dmx_parse_flush_sample", the "ctx.opid" may be NULL. The result is a crash in "gf_filter_pck_new_alloc_internal".
CWE-476 - NULL Pointer Dereference
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.