https://mariadb.com/kb/en/mariadb/mariadb-10122-release-notes/
Notable Changes
Updating from MariaDB 10.1.21 to MariaDB 10.1.22 is highly recommended due to two high-priority regression fixes. See below for links to the relevant MDEVs.
XtraDB updated to 5.6.35-80.0
TokuDB updated to 5.6.35-80.0
PCRE updated to 8.40
MDEV-12160: ed25519 authentication plugin
MDEV-11842: Fix a 10.1.21 regression with failed INSERT, BEFORE INSERT triggers, and columns with no default value
MDEV-12075: Fix a 10.1.21 regression in the InnoDB data file extension code
MDEV-11027: better InnoDB crash recovery progress reporting
MDEV-11520: improvements to how InnoDB data files are extended
Improvements to InnoDB startup/shutdown to make it more robust
MDEV-11233: fix for FULLTEXT index crash
MDEV-9734: systemd compatible bintar files now available
As per the MariaDB Deprecation Policy, this will be the last release of MariaDB 10.1 for Fedora 23, CentOS 5, RHEL 5, and openSUSE 13
OpenSUSE 42 repositories have been added in this release
Fixes for the following security vulnerabilities:
CVE-2017-3313
CVE-2017-3302
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