corosync before version 2.4.4 is vulnerable to an integer overflow in exec/totemcrypto.c.
https://www.debian.org/security/2018/dsa-4174
https://usn.ubuntu.com/4000-1/
https://security.gentoo.org/glsa/202107-01
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1084