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MS16-018: Description of the security update for Windows kernel-mode drivers: February 9, 2016

Summary
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker logs on to an affected system and runs a specially crafted application.

To learn more about the vulnerability, see Microsoft Security Bulletin MS16-018.
More information

Nonsecurity-related fixes that are included in this security update

This security update also fixes the following nonsecurity-related issues:
  • Fixes a deadlock in win32k.sys that can occur when multiple threads concurrently run GDI operations where font fallback is necessary (for example, when you use a character that does not exist in the selected font).
  • On rare occasions, WM_LBUTTONDBLCLK isn't generated the first time user double clicks the ActiveX controls. 
  • A rounding error in GDI that occurs on x64-based computers can result in 1-pixel lines that do not render.
  • Some applications have missing headers in SysListView32 controls when they are accessed through Microsoft RemoteApp.
Important
  • All future security and nonsecurity updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive future updates.
  • 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.
How to obtain and install the update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see Get security updates automatically.

Note For Windows RT 8.1, this update is available through Windows Update only.

Method 2: Microsoft Download Center

You can obtain the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

Click the download link in Microsoft Security Bulletin MS16-018 that corresponds to the version of Windows that you are running.
More information

How to obtain help and support for this security update

Help for installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Help for protecting your Windows-based computer from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support
File Information

File hash information

File nameSHA1 hashSHA256 hash
Windows6.1-KB3134214-ia64.msuDDFC25D82BA44BCC915D5BF1EE574F878140400CE069ECCB7B0D1E46439F0BBBDCD65E701E9BD28E31F317FF773031B7B13D9BB7
Windows6.0-KB3134214-x64.msu3A3B363FBC4AD19DFFFCB83AD5ACE7F36E3973B1B182511358B859611016061DEEC94A6F13D6DEF74EB42E7DFF2F6E8F2192AC88
Windows6.1-KB3134214-x64.msu34BBEBBFB83FC430C10601B068B98C99642FAA6BF25C97D0719656A3360B61141C5314B1D4E7B3A75D50C91F5CB434295D19472A
Windows6.1-KB3134214-x86.msu56BF78A611E835E287FB3688E8F1F9615093DFE40A94F42A0DFABA3ED65F2D02AEC9E46AD6A6DD7CA728A9EDA449BD6FC310DAB8
Windows8.1-KB3134214-x64.msuA650A79E9D36C1BF26670F194BCDC431804C78DA27B2193BEC80A9D0B092D29F436E558F5614493E191C33C6790A59986129F20F
Windows6.0-KB3134214-x86.msuC58A8FA1119716A4B5CA47C7AE9593C7A3B4B258ADC7638B94E2EAB581151714B652C5932BA430E7840AB0CBA6E213A76708DA21
Windows8-RT-KB3134214-x64.msuC550C9A2867D110CE0A357F5D55BC368F368C255D313AF8D4927BF55E06179C371BA9F0174861AABBBC39AE690308AC8FBCAF152
Windows8.1-KB3134214-x86.msuAA88DEFC0700BB6C25B4070A0A8318441F75402DF2C25797B118F060F25D8E78F63E4CCA6102AD9071E3A8E9031299F542242E60
Windows6.0-KB3134214-ia64.msuED5563B85C9339F4E75CBB6EC311B5F3DDED99E77D58F0455F83E639D5BABE722AA6E14008681625EF3A5E8DD17157CE4E7B9AFB

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 7 and Windows Server 2008 R2 file information

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
    6.1.760 1.18xxxWindows 7 or Windows Server 2008 R2 SP1GDR
    6.1.760 1.23 xxxWindows 7 or 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 MUM files (.mum) that are installed are not listed.
For all supported ia64-based versions
File nameFile versionFile sizeDateTimePlatform
Win32k.sys6.1.7601.191137,506,43207-Jan-201617:17IA-64
Win32k.sys6.1.7601.233177,513,08807-Jan-201617:20IA-64
For all supported x64-based versions
File nameFile versionFile sizeDateTimePlatform
Win32k.sys6.1.7601.191133,211,77607-Jan-201617:53x64
Win32k.sys6.1.7601.233173,215,36007-Jan-201618:00x64
For all supported x86-based versions
File nameFile versionFile sizeDateTimePlatform
Win32k.sys6.1.7601.191132,386,94407-Jan-201617:47x86
Win32k.sys6.1.7601.233172,395,64807-Jan-201617:48x86

Windows Vista and Windows Server 2008 file information

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
    6.0.600 2.19xxxWindows Vista or Windows Server 2008SP2GDR
    6.0.600 2.23xxxWindows Vista or Windows Server 2008SP2LDR
  • 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 MUM files (.mum) that are installed are not listed.
For all supported x64-based versions
File nameFile versionFile sizeDateTimePlatform
Win32k.sys6.0.6002.195762,799,10407-Jan-201615:32x64
Win32k.sys6.0.6002.238862,801,66407-Jan-201615:45x64
For all supported x86-based versions
File nameFile versionFile sizeDateTimePlatform
Win32k.sys6.0.6002.195762,068,48007-Jan-201615:21x86
Win32k.sys6.0.6002.238862,077,18407-Jan-201615:15x86
For all supported ia64-based versions
File nameFile versionFile sizeDateTimePlatform
Win32k.sys6.0.6002.195766,699,52007-Jan-201615:22IA-64
Win32k.sys6.0.6002.238866,709,24807-Jan-201615:20IA-64

Windows 8.1 and Windows Server 2012 R2 file information

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:
    VersionProductMilestoneService branch
    6.3.960 0.17 xxxWindows RT 8.1, Windows 8.1, and Windows Server 2012 R2RTMGDR
  • 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 MUM files (.mum) that are installed are not listed.
For all supported x64-based versions
File nameFile versionFile sizeDateTimePlatform
Win32k.ptxmlNot applicable4,21322-Aug-201306:44Not applicable
Win32k.sys6.3.9600.181904,175,87207-Jan-201618:34x64
Wow64_win32k.ptxmlNot applicable4,21321-Aug-201323:39Not applicable
For all supported x86-based versions
File nameFile versionFile sizeDateTimePlatform
Win32k.ptxmlNot applicable4,21321-Aug-201323:39Not applicable
Win32k.sys6.3.9600.181903,518,97607-Jan-201617:54x86

Windows Server 2012 file information

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 MUM files (.mum) that are installed are not listed.
For all supported x64-based versions
File nameFile versionFile sizeDateTimePlatform
Win32k.ptxmlNot applicable4,17211-Oct-201200:37Not applicable
Win32k.sys6.2.9200.176234,064,76810-Jan-201610:41x64
Win32k.ptxmlNot applicable4,17225-Jul-201220:29Not applicable
Win32k.sys6.2.9200.217434,062,20810-Jan-201600:15x64
Wow64_win32k.ptxmlNot applicable4,17212-Feb-201300:14Not applicable
Wow64_win32k.ptxmlNot applicable4,17212-Feb-201300:09Not applicable
malicious attacker exploit
Properties

Article ID: 3134214 - Last Review: 02/09/2016 18:02:00 - Revision: 1.0

Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Standard, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Foundation, Windows 8.1 Enterprise, Windows 8.1 Pro, Windows 8.1, Windows RT 8.1, Windows Server 2012 Datacenter, Windows Server 2012 Standard, Windows Server 2012 Essentials, Windows Server 2012 Foundation, Windows Server 2008 R2 Service Pack 1, Windows 7 Service Pack 1, Windows Server 2008 Service Pack 2, Windows Vista Service Pack 2

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