In ZZIPlib 0.13.67, 0.13.66, 0.13.65, 0.13.64, 0.13.63, 0.13.62, 0.13.61, 0.13.60, 0.13.59, 0.13.58, 0.13.57 and 0.13.56 there is a segmentation fault caused by invalid memory access in the zzip_disk_fread function (zzip/mmapped.c) because the size variable is not validated against the amount of file->stored data.
https://usn.ubuntu.com/3699-1/
https://lists.debian.org/debian-lts-announce/2020/06/msg00029.html
https://github.com/gdraheim/zziplib/issues/12
https://github.com/Hack-Me/Pocs_for_Multi_Versions/tree/main/CVE-2018-6381