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MS16-045: Description of the security update for Windows Hyper-V: April 12, 2016

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Summary

This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if an authenticated attacker on a guest operating system runs a specially crafted application that causes the Hyper-V host operating system to execute arbitrary code. Customers who have not enabled the Hyper-V role are not affected.



To learn more about the vulnerability, see Microsoft Security Bulletin MS16-045.

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More Information

Important
  • All future security and non-security updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive future updates.
  • 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.

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How to obtain 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.

Note For Windows RT 8.1, this update is available through Windows Update only.
Method 2: Microsoft Download Center
You can obtain 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 Microsoft Security Bulletin MS16-045 that corresponds to the version of Windows that you are running.

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How to obtain 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

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File Information

File hash information
File nameSHA1 hashSHA256 hash
Windows8-RT-KB3135456-x64.msuE2B995AF13446EF231B87151679BC34B67DCF319014336433AC1E1947E57273370E75A2CAA49F16B15C73738DBF34E0B911996F6
Windows8.1-KB3135456-x64.msuA42C42CCAE2E3DD54C0A7722FE7AECDAE2E697851683E20BA0682BCD397350ECE175007CA9D7CC85D76643AE0EA6614764287919
File information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Windows Server 2012 file information

Notes
  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
    Version Product Milestone Service branch
    6.2.920 0.17xxxWindows 8, Windows RT, or Windows Server 2012RTMGDR
    6.2.920 0.21xxxWindows 8, Windows RT, or Windows Server 2012RTMLDR
  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.
  • The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
For all supported x64-based versions
File nameFile versionFile sizeDateTimePlatform
Vmsif.dll6.2.9200.1638446,08026-Jul-201203:07x64
Vmsntfy.dll6.2.9200.1638489,08826-Jul-201203:07x64
Vmswitch.sys6.2.9200.21793567,29603-Mar-201619:28x64
Vmsif.dll6.2.9200.1638446,08026-Jul-201203:07x64
Vmsntfy.dll6.2.9200.1638489,08826-Jul-201203:07x64
Vmswitch.sys6.2.9200.21793567,29603-Mar-201619:28x64

Windows 8.1 and Windows Server 2012 R2 file information

Notes
  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
    VersionProductMilestoneService branch
    6.3.960 0.17 xxxWindows RT 8.1, Windows 8.1, and Windows Server 2012 R2RTMGDR
  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.
  • The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
For all supported x64-based versions
File nameFile versionFile sizeDateTimePlatform
Vmsif.dll6.3.9600.1825865,02403-Mar-201616:45x64
Vmsnetsetupplugin.dll6.3.9600.1739633,79208-Oct-201406:07x64
Vmswitch.sys6.3.9600.18258689,15203-Mar-201618:24x64
Vmsif.dll6.3.9600.1825865,02403-Mar-201616:45x64
Vmsntfy.dll6.3.9600.1739691,64808-Oct-201406:54x64
Vmswitch.sys6.3.9600.18258689,15203-Mar-201618:24x64
Vmsif.dll6.3.9600.1825865,02403-Mar-201616:45x64
Vmsntfy.dll6.3.9600.1739691,64808-Oct-201406:54x64
Vmswitch.sys6.3.9600.18258689,15203-Mar-201618:24x64
Vmsif.dll6.3.9600.1825865,02403-Mar-201616:45x64
Vmsntfy.dll6.3.9600.1739691,64808-Oct-201406:54x64
Vmswitch.sys6.3.9600.18258689,15203-Mar-201618:24x64

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Keywords: atdownload, kbbug, kbexpertiseinter, kbfix, kblangall, kbmustloc, kbsecbulletin, kbsecreview, kbsecurity, kbsecvulnerability, kbsurveynew, kb

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Article Info
Article ID : 3135456
Revision : 1
Created on : 1/7/2017
Published on : 4/12/2016
Exists online : False
Views : 254