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:

Download Download 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 Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

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.

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 0.17xxx

    Windows Server 2012

    RTM

    GDR

    6.2.920 0.21xxx

    Windows Server 2012

    RTM

    LDR

  • 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 name

File version

File size

Date

Time

Platform

Fltmgr.sys

6.2.9200.17649

373,592

06-Feb-2016

16:00

x64

Fltmgr.sys

6.2.9200.21766

374,616

06-Feb-2016

16:11

x64


Windows Server 2012

File property

Value

File name

Amd64_566ececc9470298fe4c3f58df63dbab7_31bf3856ad364e35_6.2.9200.21768_none_eda889a17def391e.manifest

File version

Not applicable

File size

710

Date (UTC)

06-Feb-2016

Time (UTC)

22:15

Platform

Not applicable

File name

Amd64_e6901f303a91ec4811996ba1ce5e08d7_31bf3856ad364e35_6.2.9200.17649_none_63bb7c93c5b85c02.manifest

File version

Not applicable

File size

710

Date (UTC)

06-Feb-2016

Time (UTC)

22:15

Platform

Not applicable

File name

Amd64_microsoft-windows-filtermanager-core_31bf3856ad364e35_6.2.9200.17649_none_6a034a62b46b6781.manifest

File version

Not applicable

File size

10,648

Date (UTC)

06-Feb-2016

Time (UTC)

16:04

Platform

Not applicable

File name

Amd64_microsoft-windows-filtermanager-core_31bf3856ad364e35_6.2.9200.21768_none_6a76470bcd9a25d6.manifest

File version

Not applicable

File size

10,648

Date (UTC)

06-Feb-2016

Time (UTC)

16:28

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,609

Date (UTC)

06-Feb-2016

Time (UTC)

22:15

Platform

Not applicable


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