FreeType 2 before 2016-12-16 has an out-of-bounds write caused by a heap-based buffer overflow related to the cff_parser_run function in cff/cffparse.c.
https://www.oracle.com/security-alerts/cpuapr2020.html
https://security.gentoo.org/glsa/201706-14
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=289
http://www.securityfocus.com/bid/97677
http://savannah.nongnu.org/bugs/?func=detailitem&item_id=49858