Provide references for CVE-2019-18421.
Where can I find more information about CVE-2019-18421?
References are available at: http://xenbits.xen.org/xsa/advisory-299.html, http://www.openwall.com/lists/oss-security/2019/10/31/3, http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00037.html, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2BQKX7M2RHCWDBKNPX4KEBI3MJIH6AYZ/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I5WWPW4BSZDDW7VHU427XTVXV7ROOFFW/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZYATWNUGHRBG6I3TC24YHP5Y3J7I6KH/, https://www.debian.org/security/2020/dsa-4602, https://seclists.org/bugtraq/2020/Jan/21, https://security.gentoo.org/glsa/202003-56.