A flaw was found in OpenLDAP. This flaw allows an attacker who can send a malicious packet to be processed by OpenLDAP’s slapd server, to trigger an assertion failure. The highest threat from this vulnerability is to system availability.
https://bugzilla.redhat.com/show_bug.cgi?id=1899675
http://seclists.org/fulldisclosure/2021/Feb/14
https://lists.debian.org/debian-lts-announce/2020/12/msg00008.html
https://security.netapp.com/advisory/ntap-20210716-0003/