System becomes unresponsive because filter manager leaks nonpaged pool allocations in Windows Server 2012

This article describes a memory leak issue that's found within FltpGetTargetInfo() function in IoSup.c and FltMgr.sys filter manager code in Windows Server 2012. You can fix this issue by using the update in this article.
How to get this update
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.

Method 1: Windows Update

This update is provided as a Recommended update on Windows Update. For more information about how to run Windows Update, see How to get an update through Windows Update.

Method 2: Microsoft Download Center

The update is available for download from the Microsoft Download Center:

DownloadDownload the Windows Server 2012 package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
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Update detail information

Prerequisites

There's no prerequisite to apply this update. 

Registry information

To apply this update, you don't have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this update.

Update replacement information

This update doesn't replace a previously released update.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.
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

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 Server 2012RTMGDR
    6.2.920 0.21xxxWindows 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 the MUM files (.mum) that are installed for each environment are listed in the "Additional file information" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
Windows Server 2012
File nameFile versionFile sizeDateTimePlatform
Fltmgr.sys6.2.9200.17649373,59206-Feb-201616:00x64
Fltmgr.sys6.2.9200.21766374,61606-Feb-201616:11x64

Additional file information

Windows Server 2012
File propertyValue
File nameAmd64_566ececc9470298fe4c3f58df63dbab7_31bf3856ad364e35_6.2.9200.21768_none_eda889a17def391e.manifest
File versionNot applicable
File size710
Date (UTC)06-Feb-2016
Time (UTC)22:15
PlatformNot applicable
File nameAmd64_e6901f303a91ec4811996ba1ce5e08d7_31bf3856ad364e35_6.2.9200.17649_none_63bb7c93c5b85c02.manifest
File versionNot applicable
File size710
Date (UTC)06-Feb-2016
Time (UTC)22:15
PlatformNot applicable
File nameAmd64_microsoft-windows-filtermanager-core_31bf3856ad364e35_6.2.9200.17649_none_6a034a62b46b6781.manifest
File versionNot applicable
File size10,648
Date (UTC)06-Feb-2016
Time (UTC)16:04
PlatformNot applicable
File nameAmd64_microsoft-windows-filtermanager-core_31bf3856ad364e35_6.2.9200.21768_none_6a76470bcd9a25d6.manifest
File versionNot applicable
File size10,648
Date (UTC)06-Feb-2016
Time (UTC)16:28
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,609
Date (UTC)06-Feb-2016
Time (UTC)22:15
PlatformNot applicable
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.
Properties

Article ID: 3140990 - Last Review: 04/12/2016 20:49:00 - Revision: 2.0

Windows Server 2012 Datacenter, Windows Server 2012 Standard, Windows Server 2012 Essentials, Windows Server 2012 Foundation

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