GPAC Memory Misreference Vulnerability

GPAC is an open source multimedia framework. GPAC version v2.1-DEV-rev478-g696e6f868-master is vulnerable to a memory misquoting vulnerability that stems from a confusion in the Q_IsTypeOn function in /gpac/src/bifs/unquantize.c responsible for freeing memory. An attacker could exploit this vulnerability to potentially cause a program crash, arbitrary code execution, etc.