Multiple integer overflows in the TRE library and musl libc allow attackers to cause memory corruption via a large number of (1) states or (2) tags, which triggers an out-of-bounds write.
https://security.gentoo.org/glsa/202007-43
https://security.gentoo.org/glsa/201701-11
http://www.securityfocus.com/bid/93795
http://www.openwall.com/lists/oss-security/2016/10/19/10
http://www.openwall.com/lists/oss-security/2016/10/19/1
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00041.html