Release Notes for MariaDB Enterprise Server 10.5.9-6


This sixth release of MariaDB Enterprise Server 10.5 is a maintenance release. This release includes security fixes.

MariaDB Enterprise Server 10.5.9-6 was released on 2021-03-15.

Fixed Security Vulnerabilities

CVE (with link)

CVSS base score


N/A (Critical)#1


MariaDB CVEs are assigned a word rating instead of a CVSS base score. See the MariaDB Engineering Policy for details.

Notable Changes

Issues Fixed

Can result in data loss

  • Crash on recovery after server kill during instant ADD COLUMN (MDEV-24323)

Can result in a hang or crash

Can result in unexpected behavior

Changes in Storage Engines

Interface Changes


In alignment to the enterprise lifecycle, MariaDB Enterprise Server 10.5.9-6 is provided for:

  • CentOS 7

  • CentOS 8

  • Debian 9

  • Debian 10

  • Red Hat Enterprise Linux 7

  • Red Hat Enterprise Linux 8

  • SUSE Linux Enterprise Server 12

  • SUSE Linux Enterprise Server 15

  • Ubuntu 16.04

  • Ubuntu 18.04

  • Ubuntu 20.04

  • Microsoft Windows

Some components of MariaDB Enterprise Server might not support all platforms. For additional information, see "MariaDB Corporation Engineering Policies".