zziplib is an intentionally lightweight library that offers the ability to easily extract data from files archived in a single zip file.
A fuzz on it discovered an a NULL pointer access.
The complete ASan output:
# unzzipcat-seeko $FILE /tmp/portage/dev-libs/zziplib-0.13.62-r1/work/zziplib-0.13.62/zzip/fseeko.c:313: ZZIP_ENTRY *zzip_entry_findfirst(FILE *): Assertion `0 <= root && root < mapsize' failed.
This bug was discovered by Agostino Sarubbo of Gentoo.
2017-01-17: bug discovered and poked upstream
2017-02-09: blog post about the issue
2017-02-13: CVE assigned
This bug was found with American Fuzzy Lop.