ASRock Forums : Intel microcode updates https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 05 Apr 2026 18:01:09 +0000 Mon, 05 Mar 2018 02:29:03 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=7894 <![CDATA[ASRock Forums]]> https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ <![CDATA[Intel microcode updates : I tried it and it works.Asrock...]]> https://forum.asrock.com/forum_posts.asp?TID=7894&PID=46671&title=intel-microcode-updates#46671 Author: Kladno
Subject: 7894
Posted: 05 Mar 2018 at 2:29am

I tried it and it works.

Asrock Extreme7+, CPU Skylake-S, Windows 10 1709.16299.248

InSpectre

BEFORE

Meltdown protected: YES
Spectre protected : NO

AFTER

Meltdown protected: YES
Spectre protected : YES

Powershell SpeculationControl.psm1

BEFORE

Speculation control settings for CVE-2017-5715 [branch target injection]
For more information about the output below, please refer to https://support.microsoft.com/en-in/help/4074629

Hardware support for branch target injection mitigation is present: False
Windows OS support for branch target injection mitigation is present: True
Windows OS support for branch target injection mitigation is enabled: False
Windows OS support for branch target injection mitigation is disabled by system policy: False
Windows OS support for branch target injection mitigation is disabled by absence of hardware support: True

Speculation control settings for CVE-2017-5754 [rogue data cache load]

Hardware requires kernel VA shadowing: True
Windows OS support for kernel VA shadow is present: True
Windows OS support for kernel VA shadow is enabled: True
Windows OS support for PCID performance optimization is enabled: True [not required for security]

Suggested actions

 * Install BIOS/firmware update provided by your device OEM that enables hardware support for the branch target injection mitigation.

BTIHardwarePresent             : False
BTIWindowsSupportPresent       : True
BTIWindowsSupportEnabled       : False
BTIDisabledBySystemPolicy      : False
BTIDisabledByNoHardwareSupport : True
KVAShadowRequired              : True
KVAShadowWindowsSupportPresent : True
KVAShadowWindowsSupportEnabled : True
KVAShadowPcidEnabled           : True

AFTER

Speculation control settings for CVE-2017-5715 [branch target injection]
For more information about the output below, please refer to https://support.microsoft.com/en-in/help/4074629

Hardware support for branch target injection mitigation is present: True
Windows OS support for branch target injection mitigation is present: True
Windows OS support for branch target injection mitigation is enabled: True

Speculation control settings for CVE-2017-5754 [rogue data cache load]

Hardware requires kernel VA shadowing: True
Windows OS support for kernel VA shadow is present: True
Windows OS support for kernel VA shadow is enabled: True
Windows OS support for PCID performance optimization is enabled: True [not required for security]

BTIHardwarePresent             : True
BTIWindowsSupportPresent       : True
BTIWindowsSupportEnabled       : True
BTIDisabledBySystemPolicy      : False
BTIDisabledByNoHardwareSupport : False
KVAShadowRequired              : True
KVAShadowWindowsSupportPresent : True
KVAShadowWindowsSupportEnabled : True
KVAShadowPcidEnabled           : True

This actually is a Windows update which updates Windows file
C:\Windows\System32\mcupdate_GenuineIntel.dll for Intel CPU,
or eventually mcupdate_AuthenticAMD.dll for AMD CPU.

The update KB4090007 can be uninstalled.
I do not see any side effects yet.

Check value "Update Revision" before and after in registry key:

[HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor]

In Windows is Intel Microcode Update Revision changed to C2 now.



Edited by Kladno - 05 Mar 2018 at 2:33am]]> Mon, 05 Mar 2018 02:29:03 +0000 https://forum.asrock.com/forum_posts.asp?TID=7894&PID=46671&title=intel-microcode-updates#46671 <![CDATA[Intel microcode updates : I just installed the new update...]]> https://forum.asrock.com/forum_posts.asp?TID=7894&PID=46639&title=intel-microcode-updates#46639 Author: chrisw
Subject: 7894
Posted: 04 Mar 2018 at 3:14pm

I just installed the new update that includes this.  1.4 for the x299 Taichi XE.  I have a 7940x CPU.  This update broke my ability to do a Specific Per Core overclock.  Pretty frustrating.]]> Sun, 04 Mar 2018 15:14:36 +0000 https://forum.asrock.com/forum_posts.asp?TID=7894&PID=46639&title=intel-microcode-updates#46639 <![CDATA[Intel microcode updates : I&#039;d like more info and user...]]> https://forum.asrock.com/forum_posts.asp?TID=7894&PID=46519&title=intel-microcode-updates#46519 Author: hhuey5
Subject: 7894
Posted: 03 Mar 2018 at 6:54am

I'd like more info and user reaction to this update]]> Sat, 03 Mar 2018 06:54:40 +0000 https://forum.asrock.com/forum_posts.asp?TID=7894&PID=46519&title=intel-microcode-updates#46519 <![CDATA[Intel microcode updates : I hope good news for Intel Skylake...]]> https://forum.asrock.com/forum_posts.asp?TID=7894&PID=46412&title=intel-microcode-updates#46412 Author: Kladno
Subject: 7894
Posted: 02 Mar 2018 at 4:34pm

I hope good news for Intel Skylake CPUs now...
 
03/01/2018
 
Announce that a stand-alone update for Windows 10 Version 1709 is available via the Microsoft Update Catalog. This update includes microcode updates from Intel. See Microsoft Knowledge Base Article 4090007 (https://support.microsoft.com/en-us/help/4090007/intel-microcode-updates) for more information.
 
KB4090007: Intel microcode updates
 
Intel recently announced that they have completed their validations and started to release microcode for newer CPU platforms around Spectre Variant 2 (CVE 2017-5715 ("Branch Target Injection")).
 
We will offer additional microcode updates from Intel thru this KB Article for these Operating Systems as they become available to Microsoft.
 
 


Edited by Kladno - 02 Mar 2018 at 5:07pm]]> Fri, 02 Mar 2018 16:34:44 +0000 https://forum.asrock.com/forum_posts.asp?TID=7894&PID=46412&title=intel-microcode-updates#46412