In GNU Libextractor 1.4, there is a NULL Pointer Dereference in the EXTRACTOR_nsf_extract_method function of plugins/nsf_extractor.c. Product bug: https://bugzilla.redhat.com/show_bug.cgi?id=1501695 References: http://lists.gnu.org/archive/html/bug-libextractor/2017-10/msg00004.html