GNU Libextractor 1.6 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted GIF, IT (Impulse Tracker), NSFE, S3M (Scream Tracker 3), SID, or XM (eXtended Module) file, as demonstrated by the EXTRACTOR_xm_extract_method function in plugins/xm_extractor.c.
https://lists.gnu.org/archive/html/bug-libextractor/2017-11/msg00005.html
https://gnunet.org/git/libextractor.git/commit/?id=7cc63b001ceaf81143795321379c835486d0c92e