An issue was discovered in rust-ffmpeg 0.3.0 (after comit 5ac0527) Null pointer dereference vulnerability in the dump() method allows an attacker to cause a denial of service. The vulnerability exists because the method fails to check the return value of avfilter_graph_dump() for NULL, leading to a crash if the underlying memory allocation fails.
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.