Release Notes for MariaDB Enterprise Server 10.2.37-11

This eleventh release of MariaDB Enterprise Server 10.2 is a maintenance release. This release includes security fixes.

MariaDB Enterprise Server 10.2.37-11 was released on 2021-03-15.

Fixed Security Vulnerabilities

CVE (with cve.org link)	CVSS base score
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. for details.

Notable Changes

• The new mysqldump --system={all, users, plugins, udfs, servers, stats, timezones} command-line option allows dumping system information in logical form. (MDEV-23630)

• Added primary host and port info to replica stop messages. (MDEV-10272)

• Parameter innodb_idle_flush_pct has no effect and is defined as deprecated. (MDEV-24536)

• New MariaDB Enterprise Backup --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)

• MariaDB Enterprise Backup adds completed with Error! to the end of the log file if the backup is started with parameter --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 and wsrep_notify_cmd system variables are read-only. (MDEV-25179)

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. (MENT-1124, MDEV-24449)

Can result in a hang or crash

• Possible segfault on CREATE TABLE with explicit FTS_DOC_ID_INDEX using multiple fields. (MDEV-24403)

• Server crashes upon attempt to update view through second execution of a stored procedure. (MDEV-16940)

• CREATE VIEW containing WITH clause can crash. (MDEV-22781)

• Possible crash for a query using recursive CTE without having a default schema defined. (MDEV-24019)

• Server crash on WITH RECURSIVE UNION ALL (CTE) query. (MDEV-23619)

• Server hang due to Galera lock conflict resolution. (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)

• Possible lock conflicts between two wsrep high priority threads in MariaDB Enterprise Cluster on tables having unique secondary keys. (MDEV-23851)

Can result in unexpected behavior

• SHOW GRANTS is missing the WITH GRANT privilege for roles. (MDEV-24289)

• mysqld_safe log messages are missing in the error log file. (MDEV-21367)

• CHECK_CLAUSE field in INFORMATION_SCHEMA.CHECK_CONSTRAINTS truncates check constraints expressions. (MDEV-24139)

• Unexpected error message when selecting from view that uses mergeable derived table. (MDEV-24314)

• Permission denied error message is returned on users with SELECT permissions for nested CTEs. (MDEV-20751)

• Regression: SELECT .. UNION .. with inconsistent column names fails. (MDEV-19179)

• Race condition between KILL and transaction commit with MariaDB Enterprise Cluster. (MDEV-23536)

• Plugin system variables and activation options can break mysqld --wsrep_recover for MariaDB Enterprise Cluster. (MDEV-20717)

• SELECT INTO OUTFILE used permission 666 where 644 should be used to limit the privileges to change the file. (MDEV-23875)

• Syntax error on correct syntax for CREATE VIEW that includes X is null = 0 (MDEV-24194)

• Altered connection limits for user have no effect. (MDEV-17852)

• Syntax error when using COLLATE for creating virtual columns. (MDEV-12161)

• Auto purge of relaylogs stops when relay-log-file is slave-relay-log.999999 and slave_parallel_threads is enabled. (MDEV-8134)

• ORDER BY in view definition leads to wrong result with GROUP BY on query using view. (MDEV-23826)

• SUM column from a derived table returns invalid values. (MDEV-23291)

• server_audit doesn't respect filters for PROXY_CONNECT events. (MDEV-24318)

• server_audit plugin doesn't consider proxy users in server_audit_excl_users and server_audit_incl_users (MDEV-19442)

Interface Changes

• accounts performance schema table schema changed

• CHECK_CONSTRAINTS information schema table schema changed

• events_stages_summary_by_account_by_event_name performance schema table schema changed

• events_stages_summary_by_user_by_event_name performance schema table schema changed

• events_statements_summary_by_account_by_event_name performance schema table schema changed

• events_statements_summary_by_user_by_event_name performance schema table schema changed

• events_waits_summary_by_account_by_event_name performance schema table schema changed

• events_waits_summary_by_user_by_event_name performance schema table schema changed

• group_concat_max_len system variable maximum value changed from 18446744073709551615 to 4294967295

• mariadb-backup --log-innodb-page-corruption command-line option added

• mariadb_es_repo_setup --include-unsupported command-line option added

• mariadb_es_repo_setup --skip-check-installed command-line option added

• mariadb_es_repo_setup --version command-line option added

• mariadb_repo_setup --version command-line option added

• max_sort_length system variable minimum value changed from 8 to 64

• mysqldump --system command-line option added

• setup_actors performance schema table schema changed

• threads performance schema table schema changed

• users performance schema table schema changed

Platforms

In alignment with the enterprise lifecycle, MariaDB Enterprise Server 10.2.37-11 is provided for:

• CentOS 7

• CentOS 8

• Debian 9

• Debian 10

• Red Hat Enterprise Linux 7

• Red Hat Enterprise Linux 8

• Ubuntu 16.04

• Ubuntu 18.04

• SUSE Linux Enterprise Server 12

• SUSE Linux Enterprise Server 15

• Microsoft Windows

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

Note

In alignment with the MariaDB Engineering Policies, this release does not include CentOS 6.x and RHEL 6.x packages.

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