Topic

Updated mysql packages that fix one security issue and add one enhancement
are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having low
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

Description

MySQL is a multi-user, multi-threaded SQL database server. It consists of
the MySQL server daemon (mysqld) and many client programs and libraries.

A flaw was found in the way MySQL processed HANDLER READ NEXT statements
after deleting a record. A remote, authenticated attacker could use this
flaw to provide such requests, causing mysqld to crash. This issue only
caused a temporary denial of service, as mysqld was automatically restarted
after the crash. (CVE-2012-2102)

This update also adds the following enhancement:

• The InnoDB storage engine is built-in for all architectures. This update

adds InnoDB Plugin, the InnoDB storage engine as a plug-in for the 32-bit
x86, AMD64, and Intel 64 architectures. The plug-in offers additional
features and better performance than when using the built-in InnoDB storage
engine. Refer to the MySQL documentation, linked to in the References
section, for information about enabling the plug-in. (BZ#740224)

All MySQL users should upgrade to these updated packages, which add this
enhancement and contain a backported patch to correct this issue. After
installing this update, the MySQL server daemon (mysqld) will be restarted
automatically.

Solution

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x

Fixes

• BZ - 740224 - Enabling MySQL InnoDB Plugin
• BZ - 812431 - CVE-2012-2102 mysql: Server crash on HANDLER READ NEXT after DELETE

CVEs

• CVE-2012-2102

References

• https://access.redhat.com/security/updates/classification/#low
• http://dev.mysql.com/doc/refman/5.1/en/replacing-builtin-innodb.html