> 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/community-server/old-releases/10.1/10.1.31.md).

# MariaDB 10.1.31 Release Notes

The most recent release of [MariaDB 10.1](/docs/release-notes/community-server/old-releases/10.1/changes-improvements-in-mariadb-10-1.md) is:[**MariaDB 10.1.48**](/docs/release-notes/community-server/old-releases/10.1/10.1.48.md) Stable (GA) [Download Now](https://downloads.mariadb.org/mariadb/10.1.48/)

[Download](https://downloads.mariadb.org/mariadb/10.1.31) | [Release Notes](/docs/release-notes/community-server/old-releases/10.1/10.1.31.md) | [Changelog](/docs/release-notes/community-server/changelogs/changelogs-mariadb-101-series/mariadb-10131-changelog.md) | [Overview of 10.1](/docs/release-notes/community-server/old-releases/10.1/changes-improvements-in-mariadb-10-1.md)

**Release date:** 6 Feb 2018

[MariaDB 10.1](/docs/release-notes/community-server/old-releases/10.1/changes-improvements-in-mariadb-10-1.md) is the previous stable series of MariaDB. It is an evolution\
of [MariaDB 10.0](/docs/release-notes/community-server/old-releases/10.0/changes-improvements-in-mariadb-10-0.md) with several entirely new features not found anywhere else\
and with backported and reimplemented features from MySQL 5.6 and 5.7.

[MariaDB 10.1.31](/docs/release-notes/community-server/old-releases/10.1/10.1.31.md) is a [***Stable (GA)***](/docs/release-notes/community-server/about/release-criteria.md) release.

**For an overview of** [**MariaDB 10.1**](/docs/release-notes/community-server/old-releases/10.1/changes-improvements-in-mariadb-10-1.md) **see the**[**What is MariaDB 10.1?**](/docs/release-notes/community-server/old-releases/10.1/changes-improvements-in-mariadb-10-1.md) **page.**

Thanks, and enjoy MariaDB!

## Notable Changes

* [XtraDB](/docs/server/server-usage/storage-engines/innodb.md) updated to 5.6.38-83.0
* [TokuDB](/docs/server/server-usage/storage-engines/legacy-storage-engines/tokudb.md) updated to 5.6.38-83.0
* [InnoDB](/docs/server/server-usage/storage-engines/innodb.md) updated to 5.6.39
* [MDEV-13499](https://jira.mariadb.org/browse/MDEV-13499) - Backing up table that "doesn't exist in engine" cause crash in mariadb-backup when using encryption
* [MDEV-7049](https://jira.mariadb.org/browse/MDEV-7049) MySQL#74585 - InnoDB: Failing assertion: \*mbmaxlen < 5 in file ha\_innodb.cc line 1904
* (XtraDB) [MDEV-14174](https://jira.mariadb.org/browse/MDEV-14174) - crash on start with innodb-track-changed-pages
* [MDEV-14776](https://jira.mariadb.org/browse/MDEV-14776) - InnoDB Monitor output generated by specific error is flooding error logs
* [MDEV-13205](https://jira.mariadb.org/browse/MDEV-13205) - InnoDB: Failing assertion: !dict\_index\_is\_online\_ddl(index) upon ALTER TABLE
* [MDEV-14874](https://jira.mariadb.org/browse/MDEV-14874) - innodb\_encrypt\_log corrupts the log when the LSN crosses 32-bit boundary
* [MDEV-14799](https://jira.mariadb.org/browse/MDEV-14799) - After UPDATE of indexed columns, old values will not be purged from secondary indexes
* As per the [MariaDB Deprecation Policy](/docs/release-notes/community-server/about/platform-deprecation-policy.md), this will be the last release of [MariaDB 10.1](/docs/release-notes/community-server/old-releases/10.1/changes-improvements-in-mariadb-10-1.md) for Fedora 25

### Security Fixes

* Fixes for the following [security vulnerabilities](/docs/server/security/cve.md):
  * [CVE-2018-2562](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-2562)
  * [CVE-2018-2622](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-2622)
  * [CVE-2018-2640](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-2640)
  * [CVE-2018-2665](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-2665)
  * [CVE-2018-2668](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-2668)
  * [CVE-2018-2612](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-2612)

## Changelog

For a complete list of changes made in [MariaDB 10.1.31](/docs/release-notes/community-server/old-releases/10.1/10.1.31.md), with links to detailed\
information on each push, see the [changelog](/docs/release-notes/community-server/changelogs/changelogs-mariadb-101-series/mariadb-10131-changelog.md).

A file format compatibility bug that was introduced in [MariaDB 10.1.0](/docs/release-notes/community-server/old-releases/10.1/10.1.0.md) was fixed in [MariaDB 10.1.21](/docs/release-notes/community-server/old-releases/10.1/10.1.21.md).\
Using [page\_compression](/docs/server/server-usage/storage-engines/innodb/innodb-page-compression.md) or non-default [innodb\_page\_size](/docs/server/server-usage/storage-engines/innodb/innodb-system-variables.md) created files that were incompatible with [MariaDB 10.0](/docs/release-notes/community-server/old-releases/10.0/changes-improvements-in-mariadb-10-0.md) or MySQL 5.6. [MariaDB 10.1.21](/docs/release-notes/community-server/old-releases/10.1/10.1.21.md) and higher will convert affected files from earlier [MariaDB 10.1](/docs/release-notes/community-server/old-releases/10.1/changes-improvements-in-mariadb-10-1.md) releases to a compatible format.**This prevents a downgrade to earlier** [**MariaDB 10.1**](/docs/release-notes/community-server/old-releases/10.1/changes-improvements-in-mariadb-10-1.md) **versions.**[See the commit for details.](https://github.com/MariaDB/server/commit/ab1e6fefd869242d962cb91a006f37bb9ad534a7)

{% hint style="info" %}
Be notified of new MariaDB Server releases automatically by [subscribing](https://lists.mariadb.org/postorius/lists/announce.lists.mariadb.org/) to the MariaDB Foundation community announce 'at' lists.mariadb.org announcement list (this is a low traffic, announce-only list). MariaDB plc customers will be notified for all new releases, security issues and critical bug fixes for all MariaDB plc products thanks to the Notification Services.

MariaDB may already be included in your favorite OS distribution. More information can be found on the [Distributions which Include MariaDB](/docs/general-resources/distributions-including-mariadb.md) page.
{% endhint %}

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