Computer leaks nonpaged pool memory when IPSEC traffic is configured to use AuthIP without encryption in Windows

Applies To
Windows Server 2012 R2 Datacenter Windows Server 2012 R2 Essentials Windows Server 2012 R2 Foundation Windows Server 2012 R2 Standard Windows 8.1 Windows 8.1 Pro Windows 8.1 Enterprise Windows Server 2012 Datacenter Windows Server 2012 Datacenter Windows Server 2012 Standard Windows Server 2012 Standard Windows Server 2012 Foundation Windows Server 2012 Foundation Windows Server 2012 Essentials Windows 8 Windows 8 Pro Windows 8 Enterprise Windows Server 2008 R2 Datacenter Windows Server 2008 R2 Enterprise Windows Server 2008 R2 for Itanium-Based Systems Windows Server 2008 R2 Foundation Windows Server 2008 R2 Standard Windows Server 2008 R2 Web Edition Windows 7 Enterprise Windows 7 Home Basic Windows 7 Home Premium Windows 7 Professional Windows 7 Ultimate Windows 7 Starter

Symptoms

Assume that a Windows-based computer is configured by using a specific IP Security (IPsec) rule (AuthNoEncap - AuthIP with NULL Encryption). When the computer receives User Datagram Protocol (UDP) traffic, a nonpaged pool leak occurs. If there is a large volume of traffic, the computer may become unresponsive.

For example, you may encounter this issue in the following scenario:

  • You configure the computers in a domain to use Authenticated IP (AuthIP) only for IPsec and without encryption.
  • In the domain, a computer sends a large volume of UDP traffic to a remote computer.

In this scenario, nonpaged pool memory usage increases on the remote computer. High UDP network traffic can completely exhaust the nonpaged pool memory. This causes the remote computer to become unresponsive until it is restarted.

Note Windows-based computers that host the DNS Server role are an example of a workload susceptible to this memory leak, because they service UDP-formatted DNS queries from a large collection of unique clients. However, the issue can apply to any remote computer that receives sufficient UDP traffic.

Resolution

To resolve this problem, install the hotfix that is described in this article.

Note To resolve this problem in Windows 8.1 and Windows Server 2012 R2, install update rollup 2928680 .

Hotfix information

A supported hotfix is available from Microsoft Support. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, go to the following Microsoft website:

http:⁠//support.microsoft.com/contactus/?ws=support Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running one of the following operating systems:

  • Windows 7 Service Pack 1 (SP1)
  • Windows Server 2008 R2 Service Pack 1 (SP1)
  • Windows 8
  • Windows Server 2012
  • Windows 8.1
  • Windows Server 2012 R2

Learn how to obtain Service Pack 1 for Windows 7 and Windows Server 2008 R2.

Restart requirement

A restart of the computer is required after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any previously released hotfix.

File information

The English (United States) version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows 7 and Windows Server 2008 R2 file information and notes

Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version Product SR_Level Service branch
    6.1.760
    1.
    22xxx
    Windows 7 and Windows Server 2008 R2 SP1 LDR
  • GDR service branches contain only those fixes that are widely released to address widespread, extremely important 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 separately in the "Additional file information for Windows 7 and Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely 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.

For all supported x86-based versions of Windows 7

File name File version File size Date Time Platform
Netio.sys 6.1.7601.22590 240,576 05-Feb-2014 02:06 x86
Fwpkclnt.sys 6.1.7601.22590 187,840 05-Feb-2014 02:06 x86
Tcpip.sys 6.1.7601.22590 1,309,632 05-Feb-2014 02:07 x86

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name File version File size Date Time Platform
Netio.sys 6.1.7601.22590 376,768 05-Feb-2014 02:45 x64
Fwpkclnt.sys 6.1.7601.22590 288,192 05-Feb-2014 02:45 x64
Tcpip.sys 6.1.7601.22590 1,897,408 05-Feb-2014 02:45 x64

For all supported IA-64-based versions of Windows Server 2008 R2

File name File version File size Date Time Platform
Netio.sys 6.1.7601.22590 711,104 05-Feb-2014 01:50 IA-64
Fwpkclnt.sys 6.1.7601.22590 482,752 05-Feb-2014 01:50 IA-64
Tcpip.sys 6.1.7601.22590 3,806,656 05-Feb-2014 01:50 IA-64

Windows 8 and Windows Server 2012 file information and notes

Important Windows 8 and Windows Server 2012 hotfixes are included in the same packages. However, only "Windows 8" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 8" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • 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 0.16 xxx Windows 8 and Windows Server 2012 RTM GDR
    6.2.920 0.20 xxx Windows 8 and Windows Server 2012 RTM LDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 8 and Windows Server 2012" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely 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.

For all supported x86-based versions of Windows 8

File name File version File size Date Time Platform
Fwpkclnt.sys 6.2.9200.16384 271,088 26-Jul-2012 03:30 x86
Tcpip.sys 6.2.9200.20927 1,815,384 27-Jan-2014 01:24 x86

For all supported x64-based versions of Windows 8 and of Windows Server 2012

File name File version File size Date Time Platform
Fwpkclnt.sys 6.2.9200.16384 411,888 26-Jul-2012 04:43 x64
Tcpip.sys 6.2.9200.20927 2,228,568 27-Jan-2014 05:37 x64

Windows 8.1 and Windows Server 2012 R2 file information and notes

Important Windows 8.1 and Windows Server 2012 R2 hotfixes are included in the same packages. However, only "Windows 8.1" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 8.1" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • 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
    6.3.960 0.16 xxx Windows 8.1 and Windows Server 2012 R2 RTM GDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 8.1 and Windows Server 2012 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely 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.

For all supported x86-based versions of Windows 8.1

File name File version File size Date Time Platform
Tcpip.sys 6.3.9600.16521 1,883,480 29-Jan-2014 07:43 x86

For all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

File name File version File size Date Time Platform
Tcpip.sys 6.3.9600.16521 2,543,960 29-Jan-2014 08:47 x64

For all supported ARM-based versions of Windows 8.1

File name File version File size Date Time Platform
Tcpip.sys 6.3.9600.16521 1,752,936 29-Jan-2014 06:38 Not Applicable

      

Additional file information

Additional file information for Windows 7 and Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7

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File version Not Applicable
File size 2,051
Date (UTC) 05-Feb-2014
Time (UTC) 06:35
Platform Not Applicable
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File version Not Applicable
File size 2,034
Date (UTC) 05-Feb-2014
Time (UTC) 06:35
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Date (UTC) 05-Feb-2014
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Date (UTC) 05-Feb-2014
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Date (UTC) 05-Feb-2014
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Time (UTC) 02:31
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Additional files for all supported x64-based versions of Windows 7 and Windows Server 2008 R2

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Additional files for all supported IA-64-based versions of Windows Server 2008 R2

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Additional file information for Windows 8 and Windows Server 2012

Additional files for all supported x86-based versions of Windows 8

File name Package_1_for_kb2918550~31bf3856ad364e35~x86~~6.2.1.0.mum
File version Not Applicable
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Additional files for all supported x64-based versions of Windows 8 and Windows Server 2012

File name Amd64_23621aa9d7d4ebb0acc9c320cc42c577_31bf3856ad364e35_6.2.9200.20927_none_bc2d45a9a14b4323.manifest
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Additional file information for Windows 8.1 and Windows Server 2012 R2

Additional files for all supported x86-based versions of Windows 8.1

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Additional files for all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2

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Additional files for all supported ARM-based versions of Windows 8.1

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Time (UTC) 16:17
Platform Not Applicable

      

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.