A libldb security update has been released for Fedora 33.

SECURITY: Fedora 33 Update: libldb-2.2.1-1.fc33

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Fedora Update Notification
FEDORA-2021-1a8e93a285
2021-04-07 15:39:02.487939
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Name : libldb
Product : Fedora 33
Version : 2.2.1
Release : 1.fc33
URL :   http://ldb.samba.org/
Summary : A schema-less, ldap like, API and database
Description :
An extensible library that implements an LDAP like API to access remote LDAP
servers, or use local tdb databases.

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Update Information:

Update to Samba 4.13.7 - Security fixes for CVE-2020-27840 and CVE-2021-20277
---- Update to Samba 4.13.6 - Security fixes for CVE-2020-27840 and
CVE-2021-20277
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ChangeLog:

* Thu Mar 25 2021 Guenther Deschner - 2.2.1-1
- New upstream release 2.2.1
- rhbz#1941402,1942497 - Security fix for CVE-2021-20277
* Wed Mar 24 2021 Lukas Slebodnik - 2.3.0-1
- libldb-2.3.0 is required for new samba
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References:

[ 1 ] Bug #1941400 - CVE-2020-27840 samba: Heap corruption via crafted DN strings
  https://bugzilla.redhat.com/show_bug.cgi?id=1941400
[ 2 ] Bug #1941402 - CVE-2021-20277 samba: Out of bounds read in AD DC LDAP server
  https://bugzilla.redhat.com/show_bug.cgi?id=1941402
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-1a8e93a285' at the command
line. For more information, refer to the dnf documentation available at
  http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
  https://fedoraproject.org/keys