An issue was discovered in GPAC version 0.5.2 and 0.9.0-development-20191109. There are memory leaks in metx_New in isomedia/box_code_base.c and abst_Read in isomedia/box_code_adobe.c.
https://lists.debian.org/debian-lts-announce/2020/01/msg00017.html
https://github.com/gpac/gpac/issues/1337
https://github.com/gpac/gpac/blob/v0.5.2/src/isomedia/box_code_adobe.c