Release Notes for MariaDB Enterprise Server 10.5.5-3


This third release of MariaDB Enterprise Server 10.5 is a maintenance release, including a variety of fixes.

MariaDB Enterprise Server 10.5.5-3 was released on 2020-09-08.


With MariaDB Enterprise Server 10.5 "mysql" command names are replaced with "mariadb" command names. Symbolic links are in place to maintain backward compatibility with the old names and prevent disruption. (MDEV-21303)

Fixed Security Vulnerabilities

CVE (with link)

CVSS base score



Notable Changes

Issues Fixed

Can result in data loss

  • InnoDB doublewrite recovery can corrupt data pages. (MDEV-11799)

  • InnoDB table can disappear when trying to change primary key after disabling Foreign Key checks and violating a Foreign Key constraint. (MENT-804)

  • Possible data inconsistency when executing ADD PRIMARY KEY with concurrent DML transactions. (MDEV-23244)

  • InnoDB table corruption can occur after DROP INDEX (MDEV-22988)

  • ALTER TABLE to extend a CHAR column was incorrectly allowed to be instant. (MDEV-22771)

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 10.5.5-3 is provided for:

  • CentOS 8

  • CentOS 7

  • Debian 10

  • Debian 9

  • Red Hat Enterprise Linux 8

  • Red Hat Enterprise Linux 7

  • SUSE Linux Enterprise Server 15

  • SUSE Linux Enterprise Server 12

  • Ubuntu 20.04

  • Ubuntu 18.04

  • Ubuntu 16.04

  • Microsoft Windows

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


MariaDB Enterprise Server 10.5 removes support for Red Hat Enterprise Linux (RHEL) 6 and CentOS 6.