> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/release-notes/enterprise-server/old-releases/10.4/10.4.18-11.md).

# Release Notes for MariaDB Enterprise Server 10.4.18-11

This eleventh release of MariaDB Enterprise Server 10.4 is a maintenance release. This release includes security fixes.

MariaDB Enterprise Server 10.4.18-11 was released on 2021-03-15.

## Fixed Security Vulnerabilities

| CVE (with [cve.org](https://cve.mitre.org/) link)                               | CVSS base score    |
| ------------------------------------------------------------------------------- | ------------------ |
| [CVE-2021-27928](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27928) | N/A (Critical)`#1` |

1. MariaDB CVEs are assigned a word rating instead of a CVSS base score. See the [MariaDB Engineering Policy](https://mariadb.com/engineering-policies) for details.

## Notable Changes

* The new [mariadb-dump](/docs/server/clients-and-utilities/backup-restore-and-import-clients/mariadb-dump.md) `--system={all, users, plugins, udfs, servers, stats`, timezones}`command-line option allows dumping system information in logical form.` ([MDEV-23630](https://jira.mariadb.org/browse/MDEV-23630))
* Added primary host and port info to replica stop messages. ([MDEV-10272](https://jira.mariadb.org/browse/MDEV-10272))
* Parameter innodb\_idle\_flush\_pct has no effect and is defined as deprecated. ([MDEV-24536](https://jira.mariadb.org/browse/MDEV-24536))
* New [MariaDB Enterprise Backup](/docs/server/server-usage/backup-and-restore/mariadb-enterprise-backup.md) [--log-innodb-page-corruption](/docs/server/server-usage/backup-and-restore/mariadb-backup/mariadb-backup-options.md#log-innodb-page-corruption) to continue the backup process when corruption is encountered. Corrupted pages are logged in `backup_corrupted` file in the backup destination directory. ([MDEV-22929](https://jira.mariadb.org/browse/MDEV-22929))
* [MariaDB Enterprise Backup](/docs/server/server-usage/backup-and-restore/mariadb-enterprise-backup.md) adds `completed with Error`! to the end of the log file if the backup is started with parameter [--log-innodb-page-corruption](/docs/server/server-usage/backup-and-restore/mariadb-backup/mariadb-backup-options.md#log-innodb-page-corruption) and completed with corrupted tables. The new log entry `canceled with Error!` will be used when the backup could not be completed. (MENT-1059)
* [wsrep\_provider](/docs/galera-cluster/reference/galera-cluster-system-variables.md#wsrep_provider) and [wsrep\_notify\_cmd](/docs/galera-cluster/reference/galera-cluster-system-variables.md#wsrep_notify_cmd) system variables are read-only. ([MDEV-25179](https://jira.mariadb.org/browse/MDEV-25179))
* Galera `wsrep` library updated to 26.4.7 in [MariaDB Enterprise Cluster](https://mariadb.com/docs/galera-cluster/).
* Encryption Plugin for [HashiCorp Vault](/docs/server/security/encryption/data-at-rest-encryption/key-management-and-encryption-plugins/hashicorp-key-management-plugin.md) added. (MENT-852)
* [CREATE USER](/docs/server/reference/sql-statements/account-management-sql-statements/create-user.md) and [ALTER USER](/docs/server/reference/sql-statements/account-management-sql-statements/alter-user.md) allow either order for `ACCOUNT LOCK and PASSWORD EXPIRE` ([MDEV-24098](https://jira.mariadb.org/browse/MDEV-24098))

## Issues Fixed

### Can result in data loss

* In a very unlikely event, corruption of system tablespace or last recovered page can occur on recovery or a [MariaDB Backup prepare](/docs/server/server-usage/backup-and-restore/mariadb-backup.md). (MENT-1124, [MDEV-24449](https://jira.mariadb.org/browse/MDEV-24449))
* Crash on recovery after server kill during instant `ADD COLUMN` ([MDEV-24323](https://jira.mariadb.org/browse/MDEV-24323))

### Can result in a hang or crash

* Possible segfault on [CREATE TABLE](/docs/server/server-usage/tables/create-table.md) with explicit `FTS_DOC_ID_INDEX` using multiple fields. ([MDEV-24403](https://jira.mariadb.org/browse/MDEV-24403))
* Server crashes upon attempt to update view through second execution of a stored procedure. ([MDEV-16940](https://jira.mariadb.org/browse/MDEV-16940))
* [CREATE VIEW](/docs/server/server-usage/views/create-view.md) containing [WITH](/docs/server/reference/sql-statements/data-manipulation/selecting-data/common-table-expressions/with.md) clause can crash. ([MDEV-22781](https://jira.mariadb.org/browse/MDEV-22781))
* Possible crash for a query using recursive CTE without having a default schema defined. ([MDEV-24019](https://jira.mariadb.org/browse/MDEV-24019))
* Server crash on `WITH RECURSIVE UNION ALL` (CTE) query. ([MDEV-23619](https://jira.mariadb.org/browse/MDEV-23619))
* Server hang due to [Galera](https://mariadb.com/docs/galera-cluster/) lock conflict resolution. ([MDEV-23328](https://jira.mariadb.org/browse/MDEV-23328))
* Possible crash in replication when applying a transaction that contains cascading foreign key delete for a table and that has an indexed virtual column. ([MDEV-23033](https://jira.mariadb.org/browse/MDEV-23033))
* Possible lock conflicts between two wsrep high priority threads in [MariaDB Enterprise Cluster](https://mariadb.com/docs/galera-cluster/) on tables having unique secondary keys. ([MDEV-23851](https://jira.mariadb.org/browse/MDEV-23851))
* Server crash when [VALUE()](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/values-value.md) uses a subselect. ([MDEV-24675](https://jira.mariadb.org/browse/MDEV-24675))
* Possible crash of the server when audit logging is active. (MENT-1098)
* [MariaDB Enterprise Cluster](https://mariadb.com/docs/galera-cluster/) crash after execution of XA START ([MDEV-24469](https://jira.mariadb.org/browse/MDEV-24469))

### Can result in unexpected behavior

* [SHOW GRANTS](/docs/server/reference/sql-statements/administrative-sql-statements/show/show-grants.md) is missing the `WITH GRANT` privilege for roles. ([MDEV-24289](https://jira.mariadb.org/browse/MDEV-24289))
* `mysqld_safe` log messages are missing in the error log file. ([MDEV-21367](https://jira.mariadb.org/browse/MDEV-21367))
* `CHECK_CLAUSE` field in [INFORMATION\_SCHEMA.CHECK\_CONSTRAINTS](/docs/server/reference/system-tables/information-schema/information-schema-tables/information-schema-check_constraints-table.md) truncates check constraints expressions. ([MDEV-24139](https://jira.mariadb.org/browse/MDEV-24139))
* Unexpected error message when selecting from view that uses mergeable derived table. ([MDEV-24314](https://jira.mariadb.org/browse/MDEV-24314))
* Permission denied error message is returned on users with [SELECT](/docs/server/reference/sql-statements/data-manipulation/selecting-data/select.md) permissions for nested CTEs. ([MDEV-20751](https://jira.mariadb.org/browse/MDEV-20751))
* Regression: `SELECT .. UNION` .. with inconsistent column names fails. ([MDEV-19179](https://jira.mariadb.org/browse/MDEV-19179))
* Race condition between [KILL](/docs/server/reference/sql-statements/administrative-sql-statements/kill.md) and transaction commit with [MariaDB Enterprise Cluster](https://mariadb.com/docs/galera-cluster/). ([MDEV-23536](https://jira.mariadb.org/browse/MDEV-23536))
* Plugin system variables and activation options can break mariadbd [--wsrep\_recover](/docs/galera-cluster/reference/galera-cluster-system-variables.md#wsrep_recover) for [MariaDB Enterprise Cluster](https://mariadb.com/docs/galera-cluster/). ([MDEV-20717](https://jira.mariadb.org/browse/MDEV-20717))
* `SELECT INTO OUTFILE` used permission `666` where `644` should be used to limit the privileges to change the file. ([MDEV-23875](https://jira.mariadb.org/browse/MDEV-23875))
* Syntax error on correct syntax for CREATE VIEW that includes `X is null = 0` ([MDEV-24194](https://jira.mariadb.org/browse/MDEV-24194))
* Altered connection limits for user have no effect. ([MDEV-17852](https://jira.mariadb.org/browse/MDEV-17852))
* Syntax error when using `COLLATE` for creating virtual columns. ([MDEV-12161](https://jira.mariadb.org/browse/MDEV-12161))
* Auto purge of relaylogs stops when relay-log-file is `slave-relay-log.999999` and [slave\_parallel\_threads](/docs/server/ha-and-performance/standard-replication/replication-and-binary-log-system-variables.md) is enabled. ([MDEV-8134](https://jira.mariadb.org/browse/MDEV-8134))
* `ORDER BY` in view definition leads to wrong result with GROUP BY on query using view. ([MDEV-23826](https://jira.mariadb.org/browse/MDEV-23826))
* [SUM](/docs/server/reference/sql-functions/aggregate-functions/sum.md) column from a derived table returns invalid values. ([MDEV-23291](https://jira.mariadb.org/browse/MDEV-23291))
* [server\_audit](/docs/server/reference/plugins/mariadb-audit-plugin.md) doesn't respect filters for [PROXY\_CONNECT](/docs/server/reference/plugins/mariadb-audit-plugin.md) events. ([MDEV-24318](https://jira.mariadb.org/browse/MDEV-24318))
* [server\_audit](/docs/server/reference/plugins/mariadb-audit-plugin.md) plugin doesn't consider proxy users in [server\_audit\_excl\_users](/docs/server/reference/plugins/mariadb-audit-plugin/mariadb-audit-plugin-options-and-system-variables.md) and \[server\_audit-system-variables/#server\_audit\_incl\_users|server\_audit\_incl\_users] ([MDEV-19442](https://jira.mariadb.org/browse/MDEV-19442))
* With `ALTER USER .. IDENTIFIED BY` command, password isn't replaced by asterisks in audit log. (MENT-1128)
* [UPDATE](/docs/server/reference/sql-statements/data-manipulation/changing-deleting-data/update.md) does not insert history row for [system versioned](/docs/server/reference/sql-structure/temporal-tables/system-versioned-tables.md) or application period based tables if the row has not changed. ([MDEV-23446](https://jira.mariadb.org/browse/MDEV-23446))
* Wrong duplicate primary key error between the history row generated on referential action and the history row on evaluating foreign referential action for self-reference in a [system versioned](/docs/server/reference/sql-structure/temporal-tables/system-versioned-tables.md) table ([MDEV-21138](https://jira.mariadb.org/browse/MDEV-21138), [MDEV-23644](https://jira.mariadb.org/browse/MDEV-23644))
* Wrong number of decimal digits in certain `UNION` or subquery constellations, like union of unsigned and NULL type. ([MDEV-24387](https://jira.mariadb.org/browse/MDEV-24387))
* `CREATE TABLE .. SELECT FROM` does not create table if [VALUE()](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/values-value.md) is not using a scalar value. ([MDEV-24618](https://jira.mariadb.org/browse/MDEV-24618))
* [InnoDB](/docs/server/server-usage/storage-engines/innodb.md) may report incorrect binlog position information after RESET MASTER ([MDEV-22351](https://jira.mariadb.org/browse/MDEV-22351))
* Sequences which are used as default by a table are not dumped in right order by mariadb-dump ([MDEV-21785](https://jira.mariadb.org/browse/MDEV-21785))
* [SHOW CREATE USER](/docs/server/reference/sql-statements/administrative-sql-statements/show/show-create-user.md) generates invalid SQL for user where password expiry and account lock set. ([MDEV-24098](https://jira.mariadb.org/browse/MDEV-24098))
* Garbd of [MariaDB Enterprise Cluster](https://mariadb.com/docs/galera-cluster/) can't initiate `SST` ([MDEV-23647](https://jira.mariadb.org/browse/MDEV-23647))
* Misleading error message from [mariadb-binlog](/docs/server/clients-and-utilities/logging-tools/mariadb-binlog.md) might be interpreted as a point in time recovery is not possible. ([MDEV-23846](https://jira.mariadb.org/browse/MDEV-23846))
* High memory usage in the optimizer when a query is using `SELECT … FROM tbl … WHERE unique_key not in (long-list) AND .. unique_key not in (long-list) AND ..` ([MDEV-24711](https://jira.mariadb.org/browse/MDEV-24711))
* ALTER TABLE for tables with `CHECK CONSTRAINTS returns with Out of Memory error`. ([MDEV-24274](https://jira.mariadb.org/browse/MDEV-24274))

### Related to install and upgrade

* [mariadb-upgrade](/docs/server/clients-and-utilities/deployment-tools/mariadb-upgrade.md) fails with error messages ALGORITHM=INSTANT is not supported for this operation ([MDEV-16735](https://jira.mariadb.org/browse/MDEV-16735))

## Interface Changes

* [accounts](/docs/server/reference/system-tables/performance-schema/performance-schema-tables/performance-schema-accounts-table.md) performance schema table schema changed
* [CHECK\_CONSTRAINTS](/docs/server/reference/sql-statements/data-definition/constraint.md#check-constraints) information schema table schema changed
* [events\_stages\_summary\_by\_account\_by\_event\_name](/docs/server/reference/system-tables/performance-schema/performance-schema-tables/performance-schema-events_stages_summary_by_account_by_event_name-table.md) performance schema table schema changed
* [events\_stages\_summary\_by\_user\_by\_event\_name](/docs/server/reference/system-tables/performance-schema/performance-schema-tables/performance-schema-events_stages_summary_by_user_by_event_name-table.md) performance schema table schema changed
* [events\_statements\_summary\_by\_account\_by\_event\_name](/docs/server/reference/system-tables/performance-schema/performance-schema-tables/performance-schema-events_statements_summary_by_account_by_event_name-table.md) performance schema table schema changed
* [events\_statements\_summary\_by\_user\_by\_event\_name](/docs/server/reference/system-tables/performance-schema/performance-schema-tables/performance-schema-events_statements_summary_by_user_by_event_name-table.md) performance schema table schema changed
* [events\_waits\_summary\_by\_account\_by\_event\_name](/docs/server/reference/system-tables/performance-schema/performance-schema-tables/performance-schema-events_waits_summary_by_account_by_event_name-table.md) performance schema table schema changed
* [events\_waits\_summary\_by\_user\_by\_event\_name](/docs/server/reference/system-tables/performance-schema/performance-schema-tables/performance-schema-events_waits_summary_by_user_by_event_name-table.md) performance schema table schema changed
* [group\_concat\_max\_len](/docs/server/server-management/variables-and-modes/server-system-variables.md#group_concat_max_len) system variable maximum value changed from `18446744073709551615` to `4294967295`
* [mariadb-backup](/docs/server/server-usage/backup-and-restore/mariadb-backup.md) [--log-innodb-page-corruption](/docs/server/server-usage/backup-and-restore/mariadb-backup/mariadb-backup-options.md#log-innodb-page-corruption) command-line option added
* [mariadb-dump --system](/docs/server/clients-and-utilities/backup-restore-and-import-clients/mariadb-dump.md) command-line option added
* [mariadb\_es\_repo\_setup](/docs/server/server-management/install-and-upgrade-mariadb/mariadb-package-repository-setup-and-usage.md#mariadb_es_repo_setup) --include-unsupported command-line option added
* [mariadb\_es\_repo\_setup](/docs/server/server-management/install-and-upgrade-mariadb/mariadb-package-repository-setup-and-usage.md#mariadb_es_repo_setup) --skip-check-installed command-line option added
* [mariadb\_es\_repo\_setup](/docs/server/server-management/install-and-upgrade-mariadb/mariadb-package-repository-setup-and-usage.md#mariadb_es_repo_setup) --version command-line option added
* [mariadb\_repo\_setup](/docs/server/server-management/install-and-upgrade-mariadb/mariadb-package-repository-setup-and-usage.md#mariadb_repo_setup) --version command-line option added
* [max\_sort\_length](/docs/server/server-management/variables-and-modes/server-system-variables.md#max_sort_length) system variable minimum value changed from 8 to 64
* [setup\_actors](/docs/server/reference/system-tables/performance-schema/performance-schema-tables/performance-schema-setup_actors-table.md) performance schema table schema changed
* [threads](/docs/server/reference/system-tables/performance-schema/performance-schema-tables/performance-schema-threads-table.md) performance schema table schema changed
* [users](/docs/server/reference/system-tables/performance-schema/performance-schema-tables/performance-schema-users-table.md) performance schema table schema changed

## Platforms

In alignment with the [enterprise lifecycle](/docs/release-notes/enterprise-server/about/enterprise-server-lifecycle.md), MariaDB Enterprise Server 10.4.18-11 is provided for:

* CentOS 7 (x86\_64)
* Debian 10 (x86\_64, ARM64)
* Microsoft Windows (x86\_64) (MariaDB Enterprise Cluster excluded)
* Red Hat Enterprise Linux 7 (x86\_64)
* Red Hat Enterprise Linux 8 (x86\_64, ARM64)
* Rocky Linux 8 (x86\_64, ARM64 Red Hat Enterprise Linux 8 packages)
* SUSE Linux Enterprise Server 12 (x86\_64)
* SUSE Linux Enterprise Server 15 (x86\_64, ARM64)
* Ubuntu 20.04 (x86\_64, ARM64)

Some components of MariaDB Enterprise Server might not support all platforms. For additional information, see [MariaDB Corporation Engineering Policies.](https://mariadb.com/engineering-policies)

#### Note

In alignment with the [MariaDB Engineering Policy](https://mariadb.com/engineering-policies), this release does not include CentOS 6.x and RHEL 6.x packages.

## Installation Instructions

* [MariaDB Enterprise Server 10.4](/docs/server/architecture/topologies/single-node-topologies/enterprise-server.md)
* [Enterprise Cluster Topology with MariaDB Enterprise Server 10.4](/docs/server/architecture/topologies/galera-cluster.md)
* [Primary/Replica Topology with MariaDB Enterprise Server 10.4](/docs/server/architecture/topologies/primary-replica.md)
* [Enterprise Spider Sharded Topology with MariaDB Enterprise Server 10.4](/docs/server/architecture/topologies/mariadb-enterprise-spider-topologies/sharded-mariadb-enterprise-spider-topology.md)
* [Enterprise Spider Federated Topology with MariaDB Enterprise Server 10.4](/docs/server/architecture/topologies/mariadb-enterprise-spider-topologies/federated-mariadb-enterprise-spider-topology.md)

## Upgrade Instructions

* Upgrade to MariaDB Enterprise Server 10.4
* [Upgrade from MariaDB Community Server to MariaDB Enterprise Server 10.4](/docs/server/server-management/install-and-upgrade-mariadb/upgrading/platform-specific-upgrade-guides/upgrading-on-linux/upgrading-between-major-mariadb-versions.md)

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