Issued:

2011-12-06

Updated:

2011-12-06

RHEA-2011:1594 - microcode_ctl bug fix and enhancement update

Synopsis

microcode_ctl bug fix and enhancement update

Type/Severity

Product Enhancement Advisory (none)

Topic

An updated microcode_ctl package that fixes a bug and adds various enhancements is now available for Red Hat Enterprise Linux 6.

Description

The microcode_ctl package provides microcode updates for Intel and AMD processors.

This updated package fixes the following bug:

• A previous update introduced a memory leak when loading the updated microcode into memory prior to conversion of said microcode into a format suitable for the CPU. This update includes a corrected patch that de-allocates the memory correctly, ensuring memory does not leak. (BZ#684009)

In addition, this updated package provides the following enhancements:

• The Intel CPU microcode file has been updated to version 20110915, which is the most recent version of the microcode available from Intel. (BZ#696582)

• The AMD CPU microcode file version 20110111 is now included in the package. (BZ#682668)

Note that the system must be rebooted in order for these changes to take effect.

Users are advised to upgrade to this updated microcode_ctl package, which fixes this bug and adds these enhancements.

Solution

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

This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at This content is not included.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

Updated Packages

• microcode_ctl-1.17-9.el6.src.rpm
• microcode_ctl-debuginfo-1.17-9.el6.i686.rpm
• microcode_ctl-1.17-9.el6.i686.rpm
• microcode_ctl-1.17-9.el6.x86_64.rpm
• microcode_ctl-debuginfo-1.17-9.el6.x86_64.rpm

Fixes

• This content is not included.BZ - 682668
• This content is not included.BZ - 684009

CVEs

(none)

References

(none)

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.