Microsoft Security Bulletin MS16-062 - Important

Security Update for Windows Kernel-Mode Drivers (3158222)

Published: May 10, 2016

Version: 1.0

Executive Summary

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

This security update is rated Important for all supported releases of Windows. For more information, see the Affected Software section.

The security update addresses the vulnerabilities by correcting:

  • How the Windows kernel-mode driver handles objects in memory.
  • How the Windows kernel handles memory addresses.
  • The way in which the Microsoft DirectX graphics kernel subsystem (dxgkrnl.sys) handles certain calls and escapes to preclude improper memory mapping and prevent unintended elevation from user-mode.

For more information about the vulnerabilities, see the Vulnerability Information section.

For more information about this update, see Microsoft Knowledge Base Article 3158222.

Affected Software and Vulnerability Severity Ratings

The following software versions or editions are affected. Versions or editions that are not listed are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, see Microsoft Support Lifecycle.

The following severity ratings assume the potential maximum impact of the vulnerability. For information regarding the likelihood, within 30 days of this security bulletin's release, of the exploitability of the vulnerability in relation to its severity rating and security impact, please see the Exploitability Index in the May bulletin summary.

**Affected Software** [**Win32k Elevation of Privilege Vulnerability - CVE-2016-0171**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2016-0171) [**Win32k Elevation of Privilege Vulnerability - CVE-2016-0173**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2016-0173) [**Win32k Elevation of Privilege Vulnerability - CVE-2016-0174**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2016-0174) [**Win32k Information Disclosure Vulnerability - CVE-2016-0175**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2016-0175) [**Microsoft DirectX Graphics Kernel Subsystem Elevation of Privilege Vulnerability- CVE-2016-0176**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2016-0176) [**Win32k Elevation of Privilege Vulnerability - CVE-2016-0196**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2016-0196) [**Microsoft DirectX Graphics Kernel Subsystem Elevation of Privilege Vulnerability - CVE-2016-0197**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2016-0197) **Updates Replaced**
**Windows Vista**
[Windows Vista Service Pack 2](https://www.microsoft.com/downloads/details.aspx?familyid=b4918ad8-2f4b-4519-ba62-80bd48986d7f) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3139852 in [MS16-034](http://go.microsoft.com/fwlink/?linkid=733469)
[Windows Vista Service Pack 2](https://www.microsoft.com/downloads/details.aspx?familyid=4cb7490d-3dab-414d-b8ed-e25fbf2cc3ea) (3156017) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege 2976897 in [MS14-045](http://go.microsoft.com/fwlink/?linkid=507035)
[Windows Vista x64 Edition Service Pack 2](https://www.microsoft.com/downloads/details.aspx?familyid=5b32af33-d168-4b63-b35b-6b0d5a52562f) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3139852 in [MS16-034](http://go.microsoft.com/fwlink/?linkid=733469)
[Windows Vista x64 Edition Service Pack 2](https://www.microsoft.com/downloads/details.aspx?familyid=fa65c94b-11a3-4372-9e74-8ca1cf9e3b64) (3156017) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege 2976897 in [MS14-045](http://go.microsoft.com/fwlink/?linkid=507035)
**Windows Server 2008**
[Windows Server 2008 for 32-bit Systems Service Pack 2](https://www.microsoft.com/downloads/details.aspx?familyid=d9f74705-d48f-440b-96c1-d2618d1cc530) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3139852 in [MS16-034](http://go.microsoft.com/fwlink/?linkid=733469)
[Windows Server 2008 for 32-bit Systems Service Pack 2](https://www.microsoft.com/downloads/details.aspx?familyid=cb8c7c7e-fa45-4c2f-bc9a-675e9f1a2815) (3156017) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege 2976897 in [MS14-045](http://go.microsoft.com/fwlink/?linkid=507035)
[Windows Server 2008 for x64-based Systems Service Pack 2](https://www.microsoft.com/downloads/details.aspx?familyid=e564396a-0df9-4677-8687-6a93acd17026) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3139852 in [MS16-034](http://go.microsoft.com/fwlink/?linkid=733469)
[Windows Server 2008 for x64-based Systems Service Pack 2](https://www.microsoft.com/downloads/details.aspx?familyid=d275da42-c44f-4058-9f82-5fe0bee38438) (3156017) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege 2976897 in [MS14-045](http://go.microsoft.com/fwlink/?linkid=507035)
[Windows Server 2008 for Itanium-based Systems Service Pack 2](https://www.microsoft.com/downloads/details.aspx?familyid=90bba387-4e29-4c7a-b32f-5b31256d7287) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3139852 in [MS16-034](http://go.microsoft.com/fwlink/?linkid=733469)
[Windows Server 2008 for Itanium-based Systems Service Pack 2](https://www.microsoft.com/downloads/details.aspx?familyid=c5fcabbd-2176-416a-a2b7-efdeb94c7b6d) (3156017) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege 2976897 in [MS14-045](http://go.microsoft.com/fwlink/?linkid=507035)
**Windows 7**
[Windows 7 for 32-bit Systems Service Pack 1](https://www.microsoft.com/downloads/details.aspx?familyid=ae0c2184-6d16-4e43-8d56-7a8c32f9156e) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3139852 in [MS16-034](http://go.microsoft.com/fwlink/?linkid=733469)
[Windows 7 for 32-bit Systems Service Pack 1](https://www.microsoft.com/downloads/details.aspx?familyid=dde0692a-c579-4f57-928d-0d7999b80926) (3156017) Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege Not applicable **Important**  Elevation of Privilege 2976897 in [MS14-045](http://go.microsoft.com/fwlink/?linkid=507035)
[Windows 7 for x64-based Systems Service Pack 1](https://www.microsoft.com/downloads/details.aspx?familyid=662a0984-d4fc-45f9-8b32-99952ae259d2) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3139852 in [MS16-034](http://go.microsoft.com/fwlink/?linkid=733469)
[Windows 7 for x64-based Systems Service Pack 1](https://www.microsoft.com/downloads/details.aspx?familyid=70e685a3-5639-495f-ba47-9e01bee7aea5) (3156017) Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege Not applicable **Important**  Elevation of Privilege 2976897 in [MS14-045](http://go.microsoft.com/fwlink/?linkid=507035)
**Windows Server 2008 R2**
[Windows Server 2008 R2 for x64-based Systems Service Pack 1](https://www.microsoft.com/downloads/details.aspx?familyid=d0dc1ef7-d09e-4936-bfdb-f043818b0231) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3139852 in [MS16-034](http://go.microsoft.com/fwlink/?linkid=733469)
[Windows Server 2008 R2 for x64-based Systems Service Pack 1](https://www.microsoft.com/downloads/details.aspx?familyid=20bcb93a-90ac-4bfe-917f-7a2c7deec755) (3156017) Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege Not applicable **Important**  Elevation of Privilege 2976897 in [MS14-045](http://go.microsoft.com/fwlink/?linkid=507035)
[Windows Server 2008 R2 for Itanium-based Systems Service Pack 1](https://www.microsoft.com/downloads/details.aspx?familyid=cda09e12-3592-4fda-988a-d2db9e5271ca) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3139852 in [MS16-034](http://go.microsoft.com/fwlink/?linkid=733469)
[Windows Server 2008 R2 for Itanium-based Systems Service Pack 1](https://www.microsoft.com/downloads/details.aspx?familyid=3f52800b-74ea-4208-a780-95065b8dface) (3156017) Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege Not applicable **Important**  Elevation of Privilege 2976897 in [MS14-045](http://go.microsoft.com/fwlink/?linkid=507035)
**Windows 8.1**
[Windows 8.1 for 32-bit Systems](https://www.microsoft.com/downloads/details.aspx?familyid=3c8098f4-cc5f-4fc8-bc50-dfbae0ec3630) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3145739 in [MS16-039](http://go.microsoft.com/fwlink/?linkid=746883)
[Windows 8.1 for 32-bit Systems](https://www.microsoft.com/downloads/details.aspx?familyid=de24c56f-a06f-4215-8374-08b55cb426be) (3156017) Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege Not applicable **Important**  Elevation of Privilege None
[Windows 8.1 for x64-based Systems](https://www.microsoft.com/downloads/details.aspx?familyid=25ffb6db-38e9-4f04-aac1-8eafd997704b) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3145739 in [MS16-039](http://go.microsoft.com/fwlink/?linkid=746883)
[Windows 8.1 for x64-based Systems](https://www.microsoft.com/downloads/details.aspx?familyid=98542b3d-86aa-4c87-8ed5-dc8e80f5537d) (3156017) Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege Not applicable **Important**  Elevation of Privilege None
**Windows Server 2012 and Windows Server 2012 R2**
[Windows Server 2012](https://www.microsoft.com/downloads/details.aspx?familyid=c09390c4-861d-4373-baae-472c16aefa17) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3145739 in [MS16-039](http://go.microsoft.com/fwlink/?linkid=746883)
[Windows Server 2012](https://www.microsoft.com/downloads/details.aspx?familyid=c1001d97-3ac9-45ea-9669-8d39d8eca6d3) (3156017) Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege Not applicable **Important**  Elevation of Privilege 2976897 in [MS14-045](http://go.microsoft.com/fwlink/?linkid=507035)
[Windows Server 2012 R2](https://www.microsoft.com/downloads/details.aspx?familyid=d240e08b-3b08-42f6-bb08-0a64ae4f6be0) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3145739 in [MS16-039](http://go.microsoft.com/fwlink/?linkid=746883)
[Windows Server 2012 R2](https://www.microsoft.com/downloads/details.aspx?familyid=40192e40-a60a-4304-ac9b-6c563eca60d4) (3156017) Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege Not applicable **Important**  Elevation of Privilege None
**Windows RT 8.1**
Windows RT 8.1[1] (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3145739 in [MS16-039](http://go.microsoft.com/fwlink/?linkid=746883)
Windows RT 8.1[1] (3156017) Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege Not applicable **Important**  Elevation of Privilege None
**Windows 10**
[Windows 10 for 32-bit Systems](https://support.microsoft.com/kb/3156387)[2] (3156387) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege [3147461](https://support.microsoft.com/kb/3147461)
[Windows 10 for x64-based Systems](https://support.microsoft.com/kb/3156387)[2] (3156387) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege [3147461](https://support.microsoft.com/kb/3147461)
[Windows 10 Version 1511 for 32-bit Systems](https://support.microsoft.com/kb/3156421)[2] (3156421) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege [3147458](https://support.microsoft.com/kb/3147458)
[Windows 10 Version 1511 for x64-based Systems](https://support.microsoft.com/kb/3156421)[2] (3156421) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege [3147458](https://support.microsoft.com/kb/3147458)
**Server Core installation option**
[Windows Server 2008 for 32-bit Systems Service Pack 2](https://www.microsoft.com/downloads/details.aspx?familyid=d9f74705-d48f-440b-96c1-d2618d1cc530) (Server Core installation) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3139852 in [MS16-034](http://go.microsoft.com/fwlink/?linkid=733469)
[Windows Server 2008 for 32-bit Systems Service Pack 2](https://www.microsoft.com/downloads/details.aspx?familyid=cb8c7c7e-fa45-4c2f-bc9a-675e9f1a2815) (Server Core installation) (3156017) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege 2976897 in [MS14-045](http://go.microsoft.com/fwlink/?linkid=507035)
[Windows Server 2008 for x64-based Systems Service Pack 2](https://www.microsoft.com/downloads/details.aspx?familyid=e564396a-0df9-4677-8687-6a93acd17026) (Server Core installation) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3139852 in [MS16-034](http://go.microsoft.com/fwlink/?linkid=733469)
[Windows Server 2008 for x64-based Systems Service Pack 2](https://www.microsoft.com/downloads/details.aspx?familyid=d275da42-c44f-4058-9f82-5fe0bee38438) (Server Core installation) (3156017) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege 2976897 in [MS14-045](http://go.microsoft.com/fwlink/?linkid=507035)
[Windows Server 2008 R2 for x64-based Systems Service Pack 1](https://www.microsoft.com/downloads/details.aspx?familyid=d0dc1ef7-d09e-4936-bfdb-f043818b0231) (Server Core installation) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3139852 in [MS16-034](http://go.microsoft.com/fwlink/?linkid=733469)
[Windows Server 2008 R2 for x64-based Systems Service Pack 1](https://www.microsoft.com/downloads/details.aspx?familyid=20bcb93a-90ac-4bfe-917f-7a2c7deec755) (Server Core installation) (3156017) Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege Not applicable **Important**  Elevation of Privilege 2976897 in [MS14-045](http://go.microsoft.com/fwlink/?linkid=507035)
[Windows Server 2012](https://www.microsoft.com/downloads/details.aspx?familyid=c09390c4-861d-4373-baae-472c16aefa17) (Server Core installation) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3139852 in [MS16-034](http://go.microsoft.com/fwlink/?linkid=733469)
[Windows Server 2012](https://www.microsoft.com/downloads/details.aspx?familyid=c1001d97-3ac9-45ea-9669-8d39d8eca6d3) (Server Core installation) (3156017) Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege Not applicable **Important**  Elevation of Privilege 2976897 in [MS14-045](http://go.microsoft.com/fwlink/?linkid=507035)
[Windows Server 2012 R2](https://www.microsoft.com/downloads/details.aspx?familyid=d240e08b-3b08-42f6-bb08-0a64ae4f6be0) (Server Core installation) (3153199) **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Elevation of Privilege **Important**  Information Disclosure Not applicable **Important**  Elevation of Privilege Not applicable 3139852 in [MS16-034](http://go.microsoft.com/fwlink/?linkid=733469)
[Windows Server 2012 R2](https://www.microsoft.com/downloads/details.aspx?familyid=40192e40-a60a-4304-ac9b-6c563eca60d4) (Server Core installation) (3156017) Not applicable Not applicable Not applicable Not applicable **Important**  Elevation of Privilege Not applicable **Important**  Elevation of Privilege None
[1]This update is only available via [Windows Update](http://go.microsoft.com/fwlink/?linkid=21130).

[2]Windows 10 updates are cumulative. The monthly security release includes all security fixes for vulnerabilities that affect Windows 10, in addition to non-security updates. The updates are available via the Microsoft Update Catalog.

Note Windows Server 2016 Technical Preview 5 is affected. Customers running this operating system are encouraged to apply the update, which is available via Windows Update.

*The Updates Replaced column shows only the latest update in any chain of superseded updates. For a comprehensive list of updates replaced, go to the Microsoft Update Catalog, search for the update KB number, and then view update details (updates replaced information is provided on the Package Details tab).

Vulnerability Information

Multiple Win32k Elevation of Privilege Vulnerabilities

Multiple elevation of privilege vulnerabilities exist in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited the vulnerabilities could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

To exploit the vulnerabilities, an attacker would first have to log on to the target system. An attacker could then run a specially crafted application that could exploit the vulnerabilities and take control over an affected system. The update addresses the vulnerabilities by correcting how the Windows kernel-mode driver handles objects in memory.

The following table contains links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list:

Vulnerability title CVE number Publicly disclosed Exploited
Win32k Elevation of Privilege Vulnerability CVE-2016-0171 No No
Win32k Elevation of Privilege Vulnerability CVE-2016-0173 No No
Win32k Elevation of Privilege Vulnerability CVE-2016-0174 No No
Win32k Elevation of Privilege Vulnerability CVE-2016-0196 No No
### Mitigating Factors Microsoft has not identified any [mitigating factors](https://technet.microsoft.com/library/security/dn848375.aspx) for these vulnerabilities. ### Workarounds Microsoft has not identified any [workarounds](https://technet.microsoft.com/library/security/dn848375.aspx) for these vulnerabilities. Win32k Information Disclosure Vulnerability - CVE-2016-0175 ----------------------------------------------------------- A security feature bypass vulnerability exists in Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (KASLR) bypass. An attacker who successfully exploited this vulnerability could retrieve the memory address of a kernel object. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The security update addresses the vulnerability by correcting how the Windows kernel handles memory addresses. The following table contains links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list:

Vulnerability title CVE number Publicly disclosed Exploited
Win32k Information Disclosure Vulnerability CVE-2016-0175 No No
### Mitigating Factors Microsoft has not identified any [mitigating factors](https://technet.microsoft.com/library/security/dn848375.aspx) for this vulnerability. ### Workarounds Microsoft has not identified any [workarounds](https://technet.microsoft.com/library/security/dn848375.aspx) for this vulnerability. Microsoft DirectX Graphics Kernel Subsystem Elevation of Privilege Vulnerability – CVE-2016-0176 ------------------------------------------------------------------------------------------------ An elevation of privilege vulnerability exists when the DirectX Graphics kernel subsystem (dxgkrnl.sys) improperly handles objects in memory. In a local attack scenario, an attacker could exploit this vulnerability by running a specially crafted application to take control over the affected system. An attacker who successfully exploited this vulnerability could run processes in an elevated context. The update addresses the vulnerability by correcting the way in which the Microsoft DirectX graphics kernel subsystem handles objects in memory. The following table contains links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list:

Vulnerability title CVE number Publicly disclosed Exploited
Microsoft DirectX Graphics Kernel Subsystem Elevation of Privilege Vulnerability CVE-2016-0176 No No
### Mitigating Factors Microsoft has not identified any [mitigating factors](https://technet.microsoft.com/library/security/dn848375.aspx) for this vulnerability. ### Workarounds Microsoft has not identified any [workarounds](https://technet.microsoft.com/library/security/dn848375.aspx) for this vulnerability. Microsoft DirectX Graphics Kernel Subsystem Elevation of Privilege Vulnerability – CVE-2016-0197 ------------------------------------------------------------------------------------------------ An elevation of privilege vulnerability exists when Windows improperly handles objects in memory and incorrectly maps kernel memory. In a local attack scenario, an attacker could exploit this vulnerability by running a specially crafted application to take control over the affected system. An attacker who successfully exploited this vulnerability could run processes in an elevated context. The update addresses the vulnerability by correcting the way in which the Microsoft DirectX graphics kernel subsystem (dxgkrnl.sys) handles certain calls and escapes, to preclude improper memory mapping, and to prevent unintended elevation from user-mode. The following table contains links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list:

Vulnerability title CVE number Publicly disclosed Exploited
Microsoft DirectX Graphics Kernel Subsystem Elevation of Privilege Vulnerability CVE-2016-0197 No No
### Mitigating Factors Microsoft has not identified any [mitigating factors](https://technet.microsoft.com/library/security/dn848375.aspx) for this vulnerability. ### Workarounds Microsoft has not identified any [workarounds](https://technet.microsoft.com/library/security/dn848375.aspx) for this vulnerability. Security Update Deployment -------------------------- For Security Update Deployment information, see the Microsoft Knowledge Base article referenced [here](#kbarticle) in the Executive Summary. Acknowledgments --------------- Microsoft recognizes the efforts of those in the security community who help us protect customers through coordinated vulnerability disclosure. See [Acknowledgments](https://technet.microsoft.com/library/security/mt674627.aspx) for more information. Disclaimer ---------- The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. Revisions --------- - V1.0 (May 10, 2016): Bulletin published. *Page generated 2016-06-16 13:36-07:00.*