In GNU Libextractor 1.4, there is an integer signedness error for the chunk size in the EXTRACTOR_nsfe_extract_method function in plugins/nsfe_extractor.c, leading to an infinite loop for a crafted size.
https://lists.debian.org/debian-lts-announce/2017/12/msg00000.html
https://ftp.gnu.org/gnu/libextractor/libextractor-1.6.tar.gz