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

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: 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.
    VersionProductSR_LevelService branch
    6.1.760 1. 22xxxWindows 7 and Windows Server 2008 R2SP1LDR
  • 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 nameFile versionFile sizeDateTimePlatform
Netio.sys6.1.7601.22590240,57605-Feb-201402:06x86
Fwpkclnt.sys6.1.7601.22590187,84005-Feb-201402:06x86
Tcpip.sys6.1.7601.225901,309,63205-Feb-201402:07x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Netio.sys6.1.7601.22590376,76805-Feb-201402:45x64
Fwpkclnt.sys6.1.7601.22590288,19205-Feb-201402:45x64
Tcpip.sys6.1.7601.225901,897,40805-Feb-201402:45x64
For all supported IA-64-based versions of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Netio.sys6.1.7601.22590711,10405-Feb-201401:50IA-64
Fwpkclnt.sys6.1.7601.22590482,75205-Feb-201401:50IA-64
Tcpip.sys6.1.7601.225903,806,65605-Feb-201401:50IA-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.
    VersionProductMilestoneService branch
    6.2.920 0.16 xxxWindows 8 and Windows Server 2012RTMGDR
    6.2.920 0.20 xxxWindows 8 and Windows Server 2012RTMLDR
  • 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 nameFile versionFile sizeDateTimePlatform
Fwpkclnt.sys6.2.9200.16384271,08826-Jul-201203:30x86
Tcpip.sys6.2.9200.209271,815,38427-Jan-201401:24x86
For all supported x64-based versions of Windows 8 and of Windows Server 2012
File nameFile versionFile sizeDateTimePlatform
Fwpkclnt.sys6.2.9200.16384411,88826-Jul-201204:43x64
Tcpip.sys6.2.9200.209272,228,56827-Jan-201405:37x64

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.
    VersionProductMilestoneService branch
    6.3.960 0.16 xxxWindows 8.1 and Windows Server 2012 R2RTMGDR
  • 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 nameFile versionFile sizeDateTimePlatform
Tcpip.sys6.3.9600.165211,883,48029-Jan-201407:43x86
For all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2
File nameFile versionFile sizeDateTimePlatform
Tcpip.sys6.3.9600.165212,543,96029-Jan-201408:47x64
For all supported ARM-based versions of Windows 8.1
File nameFile versionFile sizeDateTimePlatform
Tcpip.sys6.3.9600.165211,752,93629-Jan-201406:38Not 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
File namePackage_1_for_kb2918550~31bf3856ad364e35~x86~~6.1.1.0.mum
File versionNot Applicable
File size2,051
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File namePackage_2_for_kb2918550~31bf3856ad364e35~x86~~6.1.1.0.mum
File versionNot Applicable
File size2,034
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File namePackage_3_for_kb2918550~31bf3856ad364e35~x86~~6.1.1.0.mum
File versionNot Applicable
File size2,036
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File namePackage_for_kb2918550_rtm~31bf3856ad364e35~x86~~6.1.1.0.mum
File versionNot Applicable
File size1,459
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File namePackage_for_kb2918550_sp1~31bf3856ad364e35~x86~~6.1.1.0.mum
File versionNot Applicable
File size1,918
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File nameX86_5b6d91091861639ca493e61eabd54bae_31bf3856ad364e35_6.1.7601.22590_none_5d70099ec1db6f29.manifest
File versionNot Applicable
File size1,054
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File nameX86_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.1.7601.22590_none_58d1da562cf1d6da.manifest
File versionNot Applicable
File size2,540
Date (UTC)05-Feb-2014
Time (UTC)02:30
PlatformNot Applicable
File nameX86_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.1.7601.22590_none_b5547fd2de0a9071.manifest
File versionNot Applicable
File size3,834
Date (UTC)05-Feb-2014
Time (UTC)02:31
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows 7 and Windows Server 2008 R2
File nameAmd64_2f883857932a48cb389ed2630654528e_31bf3856ad364e35_6.1.7601.22590_none_f3add4eec3af4188.manifest
File versionNot Applicable
File size712
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File nameAmd64_42152651f977fb8d9febc49e7efb6968_31bf3856ad364e35_6.1.7601.22590_none_ad43eb67d8666dcd.manifest
File versionNot Applicable
File size1,060
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File nameAmd64_8055381271000010cb6c8a92bdd78daa_31bf3856ad364e35_6.1.7601.22590_none_09a7e542d9dd90dc.manifest
File versionNot Applicable
File size1,414
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File nameAmd64_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.1.7601.22590_none_b4f075d9e54f4810.manifest
File versionNot Applicable
File size2,542
Date (UTC)05-Feb-2014
Time (UTC)03:08
PlatformNot Applicable
File nameAmd64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.1.7601.22590_none_11731b56966801a7.manifest
File versionNot Applicable
File size3,838
Date (UTC)05-Feb-2014
Time (UTC)03:09
PlatformNot Applicable
File namePackage_1_for_kb2918550~31bf3856ad364e35~amd64~~6.1.1.0.mum
File versionNot Applicable
File size2,063
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File namePackage_2_for_kb2918550~31bf3856ad364e35~amd64~~6.1.1.0.mum
File versionNot Applicable
File size2,246
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File namePackage_3_for_kb2918550~31bf3856ad364e35~amd64~~6.1.1.0.mum
File versionNot Applicable
File size2,246
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File namePackage_4_for_kb2918550~31bf3856ad364e35~amd64~~6.1.1.0.mum
File versionNot Applicable
File size2,276
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File namePackage_for_kb2918550_rtm~31bf3856ad364e35~amd64~~6.1.1.0.mum
File versionNot Applicable
File size1,467
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File namePackage_for_kb2918550_sp1~31bf3856ad364e35~amd64~~6.1.1.0.mum
File versionNot Applicable
File size2,830
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File nameWow64_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.1.7601.22590_none_bf45202c19b00a0b.manifest
File versionNot Applicable
File size1,166
Date (UTC)05-Feb-2014
Time (UTC)02:16
PlatformNot Applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
File nameIa64_015c97f05cb54cb01db215bdd3afba24_31bf3856ad364e35_6.1.7601.22590_none_b590b0a49e2713c7.manifest
File versionNot Applicable
File size1,411
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File nameIa64_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.1.7601.22590_none_58d37e4c2cefdfd6.manifest
File versionNot Applicable
File size2,541
Date (UTC)05-Feb-2014
Time (UTC)02:18
PlatformNot Applicable
File nameIa64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.1.7601.22590_none_b55623c8de08996d.manifest
File versionNot Applicable
File size3,836
Date (UTC)05-Feb-2014
Time (UTC)02:20
PlatformNot Applicable
File namePackage_1_for_kb2918550~31bf3856ad364e35~ia64~~6.1.1.0.mum
File versionNot Applicable
File size2,268
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File namePackage_for_kb2918550_sp1~31bf3856ad364e35~ia64~~6.1.1.0.mum
File versionNot Applicable
File size1,446
Date (UTC)05-Feb-2014
Time (UTC)06:35
PlatformNot Applicable
File nameWow64_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.1.7601.22590_none_bf45202c19b00a0b.manifest
File versionNot Applicable
File size1,166
Date (UTC)05-Feb-2014
Time (UTC)02:16
PlatformNot Applicable

Additional file information for Windows 8 and Windows Server 2012

Additional files for all supported x86-based versions of Windows 8
File namePackage_1_for_kb2918550~31bf3856ad364e35~x86~~6.2.1.0.mum
File versionNot Applicable
File size1,837
Date (UTC)27-Jan-2014
Time (UTC)13:21
PlatformNot Applicable
File namePackage_2_for_kb2918550~31bf3856ad364e35~x86~~6.2.1.0.mum
File versionNot Applicable
File size1,837
Date (UTC)27-Jan-2014
Time (UTC)13:21
PlatformNot Applicable
File namePackage_3_for_kb2918550~31bf3856ad364e35~x86~~6.2.1.0.mum
File versionNot Applicable
File size1,837
Date (UTC)27-Jan-2014
Time (UTC)13:21
PlatformNot Applicable
File namePackage_for_kb2918550_rtm~31bf3856ad364e35~x86~~6.2.1.0.mum
File versionNot Applicable
File size2,023
Date (UTC)27-Jan-2014
Time (UTC)13:21
PlatformNot Applicable
File nameX86_d63a8f73334a1c9a0494714e4c00a328_31bf3856ad364e35_6.2.9200.20927_none_b9b306fd61a59624.manifest
File versionNot Applicable
File size702
Date (UTC)27-Jan-2014
Time (UTC)13:21
PlatformNot Applicable
File nameX86_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.2.9200.20927_none_b096a4e250b73ba3.manifest
File versionNot Applicable
File size3,883
Date (UTC)27-Jan-2014
Time (UTC)13:21
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows 8 and Windows Server 2012
File nameAmd64_23621aa9d7d4ebb0acc9c320cc42c577_31bf3856ad364e35_6.2.9200.20927_none_bc2d45a9a14b4323.manifest
File versionNot Applicable
File size706
Date (UTC)27-Jan-2014
Time (UTC)13:22
PlatformNot Applicable
File nameAmd64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.2.9200.20927_none_0cb540660914acd9.manifest
File versionNot Applicable
File size3,887
Date (UTC)27-Jan-2014
Time (UTC)13:22
PlatformNot Applicable
File namePackage_1_for_kb2918550~31bf3856ad364e35~amd64~~6.2.1.0.mum
File versionNot Applicable
File size1,847
Date (UTC)27-Jan-2014
Time (UTC)13:22
PlatformNot Applicable
File namePackage_2_for_kb2918550~31bf3856ad364e35~amd64~~6.2.1.0.mum
File versionNot Applicable
File size1,847
Date (UTC)27-Jan-2014
Time (UTC)13:22
PlatformNot Applicable
File namePackage_3_for_kb2918550~31bf3856ad364e35~amd64~~6.2.1.0.mum
File versionNot Applicable
File size1,847
Date (UTC)27-Jan-2014
Time (UTC)13:22
PlatformNot Applicable
File namePackage_for_kb2918550_rtm~31bf3856ad364e35~amd64~~6.2.1.0.mum
File versionNot Applicable
File size2,035
Date (UTC)27-Jan-2014
Time (UTC)13:22
PlatformNot Applicable

Additional file information for Windows 8.1 and Windows Server 2012 R2

Additional files for all supported x86-based versions of Windows 8.1
File namePackage_1_for_kb2918550~31bf3856ad364e35~x86~~6.3.1.0.mum
File versionNot Applicable
File size1,837
Date (UTC)29-Jan-2014
Time (UTC)16:16
PlatformNot Applicable
File namePackage_2_for_kb2918550~31bf3856ad364e35~x86~~6.3.1.0.mum
File versionNot Applicable
File size2,057
Date (UTC)29-Jan-2014
Time (UTC)16:16
PlatformNot Applicable
File namePackage_3_for_kb2918550~31bf3856ad364e35~x86~~6.3.1.0.mum
File versionNot Applicable
File size1,837
Date (UTC)29-Jan-2014
Time (UTC)16:16
PlatformNot Applicable
File namePackage_for_kb2918550_rtm~31bf3856ad364e35~x86~~6.3.1.0.mum
File versionNot Applicable
File size2,243
Date (UTC)29-Jan-2014
Time (UTC)16:16
PlatformNot Applicable
File nameX86_7256edac09781f8a48bd141238d9e5cb_31bf3856ad364e35_6.3.9600.16521_none_b5fc2f3e785ea440.manifest
File versionNot Applicable
File size702
Date (UTC)29-Jan-2014
Time (UTC)16:16
PlatformNot Applicable
File nameX86_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.3.9600.16521_none_47fbb94f81d1dcd7.manifest
File versionNot Applicable
File size3,883
Date (UTC)29-Jan-2014
Time (UTC)16:16
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2
File nameAmd64_4d6aae1b542e64bd09168177074ebd50_31bf3856ad364e35_6.3.9600.16521_none_229a4a7207afb47a.manifest
File versionNot Applicable
File size706
Date (UTC)29-Jan-2014
Time (UTC)16:14
PlatformNot Applicable
File nameAmd64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.3.9600.16521_none_a41a54d33a2f4e0d.manifest
File versionNot Applicable
File size3,887
Date (UTC)29-Jan-2014
Time (UTC)16:14
PlatformNot Applicable
File namePackage_1_for_kb2918550~31bf3856ad364e35~amd64~~6.3.1.0.mum
File versionNot Applicable
File size1,847
Date (UTC)29-Jan-2014
Time (UTC)16:14
PlatformNot Applicable
File namePackage_2_for_kb2918550~31bf3856ad364e35~amd64~~6.3.1.0.mum
File versionNot Applicable
File size2,291
Date (UTC)29-Jan-2014
Time (UTC)16:14
PlatformNot Applicable
File namePackage_3_for_kb2918550~31bf3856ad364e35~amd64~~6.3.1.0.mum
File versionNot Applicable
File size1,847
Date (UTC)29-Jan-2014
Time (UTC)16:14
PlatformNot Applicable
File namePackage_for_kb2918550_rtm~31bf3856ad364e35~amd64~~6.3.1.0.mum
File versionNot Applicable
File size2,479
Date (UTC)29-Jan-2014
Time (UTC)16:14
PlatformNot Applicable
Additional files for all supported ARM-based versions of Windows 8.1
File nameArm_c9af02bbe3d49dc391e6ef9125b1c2f1_31bf3856ad364e35_6.3.9600.16521_none_9e2ec31409e76c0e.manifest
File versionNot Applicable
File size702
Date (UTC)29-Jan-2014
Time (UTC)16:17
PlatformNot Applicable
File nameArm_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.3.9600.16521_none_47fe2ba781cefb9d.manifest
File versionNot Applicable
File size3,883
Date (UTC)29-Jan-2014
Time (UTC)16:17
PlatformNot Applicable
File namePackage_1_for_kb2918550~31bf3856ad364e35~arm~~6.3.1.0.mum
File versionNot Applicable
File size1,837
Date (UTC)29-Jan-2014
Time (UTC)16:17
PlatformNot Applicable
File namePackage_2_for_kb2918550~31bf3856ad364e35~arm~~6.3.1.0.mum
File versionNot Applicable
File size2,057
Date (UTC)29-Jan-2014
Time (UTC)16:17
PlatformNot Applicable
File namePackage_3_for_kb2918550~31bf3856ad364e35~arm~~6.3.1.0.mum
File versionNot Applicable
File size1,837
Date (UTC)29-Jan-2014
Time (UTC)16:17
PlatformNot Applicable
File namePackage_for_kb2918550_rtm~31bf3856ad364e35~arm~~6.3.1.0.mum
File versionNot Applicable
File size2,243
Date (UTC)29-Jan-2014
Time (UTC)16:17
PlatformNot 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.
Properties

Article ID: 2918550 - Last Review: 05/08/2014 13:34:00 - Revision: 3.0

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