zchunk before 1.3.2 has multiple integer overflows via malformed zchunk files to lib/comp/comp.c, lib/comp/zstd/zstd.c, lib/dl/multipart.c, or lib/header.c.
https://github.com/zchunk/zchunk/compare/1.3.1...1.3.2
https://github.com/zchunk/zchunk/commit/08aec2b4dfd7f709b6e3d511411ffcc83ed4efbe