Updated microcode_ctl packages that add one enhancement are now available for Red Hat Enterprise Linux 5.
The microcode_ctl packages provide microcode updates for Intel and AMD processors.
The Intel CPU microcode file has been updated to version 20120606. This is the most recent version of the microcode available from Intel.
All users of microcode_ctl are advised to upgrade to these updated packages, which add this enhancement. Note that the system must be rebooted in order for these changes to take effect.