An issue was discovered in ZZIPlib 0.13.68. There is a bus error caused by the __zzip_parse_root_directory function of zip.c. Attackers could leverage this vulnerability to cause a denial of service via a crafted zip file.
https://usn.ubuntu.com/3699-1/
https://lists.debian.org/debian-lts-announce/2020/06/msg00029.html