Heap corruption occurs in the Svchost.exe process in Windows 7 or in Windows Server 2008 R2

Not sure if this is the right fix? We've added this issue to our memory dump diagnostic which can confirm.

Symptoms

On a computer that is running Windows 7 or Windows Server 2008 R2, heap corruption randomly occurs in the Svchost.exe process. This heap corruption causes a critical exception together with the following error code:

STATUS_HEAP_CORRUPTION (0xC0000374)

Notes

  • The stack dump file that is generated when this issue occurs indicates possible heap corruption in the following location:

    sspicli!DisconnectRpcConnection+0x23

  • The service that fails when this issue occurs may restart automatically. Therefore, you may not notice the failure itself. You may only notice that a new application dump file is created.

Cause

This issue may occur if the Wired AutoConfig service or the Remote Access Connection Manager service calls the RasEapInitialize method in two threads at the same time.

Resolution

Hotfix information

A supported hotfix is available from Microsoft. 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, visit the following Microsoft website:

http://support.microsoft.com/contactus/?ws=supportNote 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

  • Windows 7 Service Pack 1 (SP1)

  • Windows Server 2008 R2

  • Windows Server 2008 R2 Service Pack 1 (SP1)

For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To apply this hotfix, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global 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 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, 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

    6.1.760
    0.17xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    GDR

    6.1.760
    0.21xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    LDR

    6.1.760
    1.17xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    GDR

    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, 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 separately in the "Additional file information for Windows 7 and for Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. 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

Rastls.dll

6.1.7600.17122

372,224

06-Sep-2012

16:40

x86

Rastls.dll

6.1.7600.21320

372,736

06-Sep-2012

19:08

x86

Rastls.dll

6.1.7601.17950

372,224

06-Sep-2012

16:33

x86

Rastls.dll

6.1.7601.22108

373,248

06-Sep-2012

16:31

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

Rastls.dll

6.1.7600.17122

424,448

06-Sep-2012

17:28

x64

Rastls.dll

6.1.7600.21320

424,960

06-Sep-2012

19:58

x64

Rastls.dll

6.1.7601.17950

424,448

06-Sep-2012

17:41

x64

Rastls.dll

6.1.7601.22108

424,960

06-Sep-2012

18:03

x64

Rastls.dll

6.1.7600.17122

372,224

06-Sep-2012

16:40

x86

Rastls.dll

6.1.7600.21320

372,736

06-Sep-2012

19:08

x86

Rastls.dll

6.1.7601.17950

372,224

06-Sep-2012

16:33

x86

Rastls.dll

6.1.7601.22108

373,248

06-Sep-2012

16:31

x86

For all supported IA-64-based versions of Windows 7 and of Windows Server 2008 R2

File name

File version

File size

Date

Time

Rastls.dll

6.1.7600.17122

756,736

06-Sep-2012

16:29

Rastls.dll

6.1.7600.21320

758,784

06-Sep-2012

19:12

Rastls.dll

6.1.7601.17950

757,248

06-Sep-2012

16:25

Rastls.dll

6.1.7601.22108

758,784

07-Sep-2012

12:20

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

Additional file information for Windows 7 and for Windows Server 2008 R2

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

File name

X86_5905d4f4b73e20a0020330b1b1018667_31bf3856ad364e35_6.1.7600.21320_none_a97d103b1d76c4d8.manifest

File version

Not applicable

File size

694

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

Platform

Not applicable

File name

X86_ce1419fb0131fc7715283e6bcb1d7c22_31bf3856ad364e35_6.1.7601.22108_none_02144cc9945d5554.manifest

File version

Not applicable

File size

694

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

Platform

Not applicable

File name

X86_d05c5f024c87b90c5ec4557b00061133_31bf3856ad364e35_6.1.7601.17950_none_ca385c7f70446d23.manifest

File version

Not applicable

File size

694

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

Platform

Not applicable

File name

X86_dda6d6e7b5c527aa126c1f419148c2ea_31bf3856ad364e35_6.1.7600.17122_none_f63afcf50d157c6e.manifest

File version

Not applicable

File size

694

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

Platform

Not applicable

File name

X86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.17122_none_6c794627b149a166.manifest

File version

Not applicable

File size

4,741

Date (UTC)

06-Sep-2012

Time (UTC)

17:07

Platform

Not applicable

File name

X86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.21320_none_6d00e444ca690ba9.manifest

File version

Not applicable

File size

4,741

Date (UTC)

06-Sep-2012

Time (UTC)

19:41

Platform

Not applicable

File name

X86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.17950_none_6e3d5c99ae89f85c.manifest

File version

Not applicable

File size

4,741

Date (UTC)

06-Sep-2012

Time (UTC)

17:10

Platform

Not applicable

File name

X86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.22108_none_6f04e372c7780a6b.manifest

File version

Not applicable

File size

4,741

Date (UTC)

06-Sep-2012

Time (UTC)

17:05

Platform

Not applicable

Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

Amd64_3211bf4496501bb5ec9520fbfe93a118_31bf3856ad364e35_6.1.7600.21320_none_adf14b34733c9b9c.manifest

File version

Not applicable

File size

1,036

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

Platform

Not applicable

File name

Amd64_5aa4c8e0dcea69c57aad41b0ed4910c8_31bf3856ad364e35_6.1.7601.17950_none_4577e799717bfff1.manifest

File version

Not applicable

File size

698

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

Platform

Not applicable

File name

Amd64_ac44850308fd986af0bdb482d8e6458d_31bf3856ad364e35_6.1.7601.17950_none_b0e1886e0a6b57d2.manifest

File version

Not applicable

File size

1,036

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

Platform

Not applicable

File name

Amd64_cc23498f1840cce27475c1babe73469f_31bf3856ad364e35_6.1.7601.22108_none_54b7d563e1760b85.manifest

File version

Not applicable

File size

698

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

Platform

Not applicable

File name

Amd64_d9a8cc45bc3566ee0450ea7a2e22eade_31bf3856ad364e35_6.1.7600.17122_none_c048b61e2dcec03d.manifest

File version

Not applicable

File size

1,036

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

Platform

Not applicable

File name

Amd64_e1d1dbe08f0d82f03829a0379f4b495c_31bf3856ad364e35_6.1.7601.22108_none_87ff663500455b58.manifest

File version

Not applicable

File size

1,036

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

Platform

Not applicable

File name

Amd64_e1fb67f2de0c0b6026880ac9de2f6866_31bf3856ad364e35_6.1.7600.21320_none_d13bf0bad882e8aa.manifest

File version

Not applicable

File size

698

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

Platform

Not applicable

File name

Amd64_fa21b3529d7f3cebb8d199b44898f9bc_31bf3856ad364e35_6.1.7600.17122_none_baf5e941c4b14a99.manifest

File version

Not applicable

File size

698

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

Platform

Not applicable

File name

Amd64_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.17122_none_c897e1ab69a7129c.manifest

File version

Not applicable

File size

4,745

Date (UTC)

06-Sep-2012

Time (UTC)

18:16

Platform

Not applicable

File name

Amd64_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.21320_none_c91f7fc882c67cdf.manifest

File version

Not applicable

File size

4,745

Date (UTC)

06-Sep-2012

Time (UTC)

20:48

Platform

Not applicable

File name

Amd64_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.17950_none_ca5bf81d66e76992.manifest

File version

Not applicable

File size

4,745

Date (UTC)

06-Sep-2012

Time (UTC)

18:18

Platform

Not applicable

File name

Amd64_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.22108_none_cb237ef67fd57ba1.manifest

File version

Not applicable

File size

4,745

Date (UTC)

06-Sep-2012

Time (UTC)

18:40

Platform

Not applicable

File name

X86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.17122_none_6c794627b149a166.manifest

File version

Not applicable

File size

4,741

Date (UTC)

06-Sep-2012

Time (UTC)

17:07

Platform

Not applicable

File name

X86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.21320_none_6d00e444ca690ba9.manifest

File version

Not applicable

File size

4,741

Date (UTC)

06-Sep-2012

Time (UTC)

19:41

Platform

Not applicable

File name

X86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.17950_none_6e3d5c99ae89f85c.manifest

File version

Not applicable

File size

4,741

Date (UTC)

06-Sep-2012

Time (UTC)

17:10

Platform

Not applicable

File name

X86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.22108_none_6f04e372c7780a6b.manifest

File version

Not applicable

File size

4,741

Date (UTC)

06-Sep-2012

Time (UTC)

17:05

Platform

Not applicable

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

File name

Ia64_358cbb4668a1754f659f6f47ecee0a76_31bf3856ad364e35_6.1.7601.22108_none_eb00b8be05cdb2a9.manifest

File version

Not applicable

File size

1,034

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

File name

Ia64_5e9e0ed79905f4e356d20c2e031e88e1_31bf3856ad364e35_6.1.7601.17950_none_d6ae985afd40020d.manifest

File version

Not applicable

File size

1,034

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

File name

Ia64_62d4a83f3a264913f301c23775254135_31bf3856ad364e35_6.1.7600.17122_none_3dfa5ae3a6ee6e16.manifest

File version

Not applicable

File size

1,034

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

File name

Ia64_a69b32dd7c7b7f9baeebadca75cd1db6_31bf3856ad364e35_6.1.7600.21320_none_e88765b250ffa63d.manifest

File version

Not applicable

File size

1,034

Date (UTC)

07-Sep-2012

Time (UTC)

15:31

File name

Ia64_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.17122_none_6c7aea1db147aa62.manifest

File version

Not applicable

File size

4,743

Date (UTC)

06-Sep-2012

Time (UTC)

18:21

File name

Ia64_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.21320_none_6d02883aca6714a5.manifest

File version

Not applicable

File size

4,743

Date (UTC)

06-Sep-2012

Time (UTC)

20:37

File name

Ia64_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.17950_none_6e3f008fae880158.manifest

File version

Not applicable

File size

4,743

Date (UTC)

06-Sep-2012

Time (UTC)

18:06

File name

Ia64_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.22108_none_6f068768c7761367.manifest

File version

Not applicable

File size

4,743

Date (UTC)

07-Sep-2012

Time (UTC)

12:50

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