FreeType 2 before 2017-02-02 has an out-of-bounds write caused by a heap-based buffer overflow related to the tt_size_reset function in truetype/ttobjs.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=509