(RHSA-2016:22610) Moderate: mariadb security and bug fix update

MariaDB is a multi-user, multi-threaded SQL database server that is binary
compatible with MySQL.

It was found that the MariaDB client library did not properly check host
names against server identities noted in the X.509 certificates when
establishing secure connections using TLS/SSL. A man-in-the-middle attacker
could possibly use this flaw to impersonate a server to a client.
(CVE-2016-2047)

This update fixes several vulnerabilities in the MariaDB database server.
Information about these flaws can be found on the Oracle Critical Patch
Update Advisory page, listed in the References section. (CVE-2015-4792,
CVE-2015-4802, CVE-2015-4815, CVE-2015-4816, CVE-2015-4819, CVE-2015-4826,
CVE-2015-4830, CVE-2015-4836, CVE-2015-4858, CVE-2015-4861, CVE-2015-4870,
CVE-2015-4879, CVE-2015-4913, CVE-2016-0505, CVE-2016-0546, CVE-2016-0596,
CVE-2016-0597, CVE-2016-0598, CVE-2016-0600, CVE-2016-0606, CVE-2016-0608,
CVE-2016-0609, CVE-2016-0616)

This update also fixes the following bug:

• When more than one INSERT operation was executed concurrently on a
  non-empty InnoDB table with an AUTO_INCREMENT column defined as a primary
  key immediately after starting MariaDB, a race condition could occur. As a
  consequence, one of the concurrent INSERT operations failed with a
  “Duplicate key” error message. A patch has been applied to prevent the race
  condition. Now, each row inserted as a result of the concurrent INSERT
  operations receives a unique primary key, and the operations no longer fail
  in this scenario. (BZ#1303946)

These updated packages upgrade MariaDB to version 5.5.47. Refer to the
MariaDB Release Notes listed in the References section for a complete list
of changes.

All MariaDB users should upgrade to these updated packages, which correct
these issues. After installing this update, the mariadb service will be
restarted automatically.