Microsoft security advisory: Update to Hyper-V to address CPU weakness: November 10, 2015

Summary
Microsoft has released a security advisory about this issue for IT professionals. The security advisory contains additional security-related information. To learn more about the vulnerability, see https://technet.microsoft.com/security/advisory/3108638
More information
Important
  • If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.
More information about this security update
The following article contains more information about this security update as it relates to individual product versions. The article may contain known issue information.
  • 3108604 Microsoft Security Advisory: Description of the security update for Windows Hyper-V: November 10, 2015
How to get and install the update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see Get security updates automatically.

Method 2: Microsoft Download Center

You can get the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

Click the download link in the following table that corresponds to the version of Windows that you are running. Determine whether your computer is running the 32-bit or 64-bit version of Windows
Windows Server 2008
Windows Server 2008 for x64-based Systems Service Pack 2
(3108604)
Windows Server 2008 R2
Windows Server 2008 R2 for x64-based Systems Service Pack 1
(3108604)
Windows 8 and Windows 8.1
Windows 8 for x64-based Systems
(Professional and Enterprise editions only)
(3108604)
Windows 8.1 for x64-based Systems
(Professional and Enterprise editions only)
(3108604)
Windows Server 2012 and Windows Server 2012 R2
Windows Server 2012
(3108604)
Windows Server 2012 R2
(3108604)
Windows 10
Windows 10 for x64-based Systems
(Excluding Home editions)
(3108604)
Windows 10 Version 1511 for x64-based Systems
(Excluding Home editions)
(3108604)
Server Core installation option
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
(3108604)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
(3108604)
Windows Server 2012 (Server Core installation)
(3108604)
Windows Server 2012 R2 (Server Core installation)
(3108604)
More information

Security update deployment information

Windows Server 2008

Reference Table

The following table contains the security update information for this software.
Security update file namesFor all supported x64-based editions of Windows Server 2008:
Windows6.0-KB3108604-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementA system restart is required after you apply this security update.
Removal informationWUSA.exe does not support uninstall of updates. To uninstall an update installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates, and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3108604
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows Server 2008 R2

Reference Table

The following table contains the security update information for this software.
Security update file nameFor all supported x64-based editions of Windows Server 2008 R2:
Windows6.1-KB3108638-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementA system restart is required after you apply this security update.
Removal informationTo uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates, and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3108604
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows 8 and Windows 8.1

Reference Table

The following table contains the security update information for this software.
Security update file nameFor all supported x64-based editions of Windows 8:
(Professional and Enterprise editions only)
Windows8-RT-KB3108638-x64.msu

For all supported x64-based editions of Windows 8.1:
(Professional and Enterprise editions only)
Windows8.1-KB3108638-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementA system restart is required after you apply this security update.
Removal informationTo uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3108604
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows Server 2012 and Windows Server 2012 R2

Reference Table

The following table contains the security update information for this software.
Security update file nameFor all supported editions of Windows Server 2012:
Windows8-RT-KB3108638-x64.msu

For all supported editions of Windows Server 2012 R2:
Windows8.1-KB3108638-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementA system restart is required after you apply this security update.
Removal informationTo uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3108604
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows 10

Reference Table

The following table contains the security update information for this software.
Security update file nameFor all supported x64-based editions of Windows 10:
(Excluding Home editions)
Windows10.0-KB3105213-x64.msu

For all supported x64-based editions of Windows 10 Version 1511:
(Excluding Home editions)
Windows10.0-KB3105211-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementA system restart is required after you apply this security update.
Removal informationTo uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3105213
See Microsoft Knowledge Base Article 3105211
Registry key verificationNote A registry key does not exist to validate the presence of this update.

How to get help and support for this security update

Help for installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Help for protecting your Windows-based computer from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support
update security_patch security_update security bug flaw vulnerability malicious attacker exploit registry unauthenticated buffer overrun overflow specially-formed scope specially-crafted denial of service DoS TSE
Properties

Article ID: 3108638 - Last Review: 04/19/2016 21:12:00 - Revision: 3.0

  • kbexpertiseinter kbinfo kbsecadvisory kbsecurity kbsecvulnerability KB3108638
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