Provide references for CVE-2021-28994.
Where can I find more information about CVE-2021-28994?
References are available at: https://www.openwall.com/lists/oss-security/2021/03/19/6, http://www.openwall.com/lists/oss-security/2021/04/01/1, http://www.openwall.com/lists/oss-security/2021/04/25/1.