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Published February 06, 2017 | Updated February 8, 2017

The Android Security Bulletin contains details of security vulnerabilities affecting Android devices. Alongside the bulletin, we have released a security update to Google devices through an over-the-air (OTA) update. The Google device firmware images have also been released to the Google Developer site. Security patch levels of February 05, 2017 or later address all of these issues. Refer to the Pixel and Nexus update schedule to learn how to check a device's security patch level.

Partners were notified of the issues described in the bulletin on January 03, 2017 or earlier. Source code patches for these issues have been released to the Android Open Source Project (AOSP) repository and linked from this bulletin. This bulletin also includes links to patches outside of AOSP.

The most severe of these issues is a Critical security vulnerability that could enable remote code execution on an affected device through multiple methods such as email, web browsing, and MMS when processing media files. The severity assessment is based on the effect that exploiting the vulnerability would possibly have on an affected device, assuming the platform and service mitigations are disabled for development purposes or if successfully bypassed.

We have had no reports of active customer exploitation or abuse of these newly reported issues. Refer to the Android and Google service mitigations section for details on the Android security platform protections and service protections such as SafetyNet, which improve the security of the Android platform.

We encourage all customers to accept these updates to their devices.

Announcements

This bulletin has two security patch level strings to provide Android partners with the flexibility to more quickly fix a subset of vulnerabilities that are similar across all Android devices. See Common questions and answers for additional information: 2017-02-01 : Partial security patch level string. This security patch level string indicates that all issues associated with 2017-02-01 (and all previous security patch level strings) are addressed. 2017-02-05 : Complete security patch level string. This security patch level string indicates that all issues associated with 2017-02-01 and 2017-02-05 (and all previous security patch level strings) are addressed.

Supported Google devices will receive a single OTA update with the February 05, 2017 security patch level.

Android and Google service mitigations

This is a summary of the mitigations provided by the Android security platform and service protections, such as SafetyNet. These capabilities reduce the likelihood that security vulnerabilities could be successfully exploited on Android.

Exploitation for many issues on Android is made more difficult by enhancements in newer versions of the Android platform. We encourage all users to update to the latest version of Android where possible.

The Android Security team actively monitors for abuse with Verify Apps and SafetyNet, which are designed to warn users about Potentially Harmful Applications. Verify Apps is enabled by default on devices with Google Mobile Services and is especially important for users who install applications from outside of Google Play. Device rooting tools are prohibited within Google Play, but Verify Apps warns users when they attempt to install a detected rooting application—no matter where it comes from. Additionally, Verify Apps attempts to identify and block installation of known malicious applications that exploit a privilege escalation vulnerability. If such an application has already been installed, Verify Apps will notify the user and attempt to remove the detected application.

As appropriate, Google Hangouts and Messenger applications do not automatically pass media to processes such as Mediaserver.

Acknowledgements

We would like to thank these researchers for their contributions:

We would also like to thank the following for their contributions to this bulletin:

Pengfei Ding (丁鹏飞), Chenfu Bao (包沉浮), and Lenx Wei (韦韬) of Baidu X-Lab (百度安全实验室)

2017-02-01 security patch level—Vulnerability details

In the sections below, we provide details for each of the security vulnerabilities that apply to the 2017-02-01 patch level. There is a description of the issue, a severity rationale, and a table with the CVE, associated references, severity, updated Google devices, updated AOSP versions (where applicable), and date reported. When available, we will link the public change that addressed the issue to the bug ID, like the AOSP change list. When multiple changes relate to a single bug, additional references are linked to numbers following the bug ID.

Remote code execution vulnerability in Surfaceflinger

A remote code execution vulnerability in Surfaceflinger could enable an attacker using a specially crafted file to cause memory corruption during media file and data processing. This issue is rated as Critical due to the possibility of remote code execution within the context of the Surfaceflinger process.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0405 A-31960359 Critical All 7.0, 7.1.1 Oct 4, 2016

Remote code execution vulnerability in Mediaserver

A remote code execution vulnerability in Mediaserver could enable an attacker using a specially crafted file to cause memory corruption during media file and data processing. This issue is rated as Critical due to the possibility of remote code execution within the context of the Mediaserver process.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0406 A-32915871 [2] Critical All 6.0, 6.0.1, 7.0, 7.1.1 Nov 14, 2016 CVE-2017-0407 A-32873375 Critical All 6.0, 6.0.1, 7.0, 7.1.1 Nov 12, 2016

Remote code execution vulnerability in libgdx

A remote code execution vulnerability in libgdx could enable an attacker using a specially crafted file to execute arbitrary code in the context of an unprivileged process. This issue is rated as High due to the possibility of remote code execution in an application that uses this library.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0408 A-32769670 High All 7.1.1 Nov 9, 2016

Remote code execution vulnerability in libstagefright

A remote code execution vulnerability in libstagefright could enable an attacker using a specially crafted file to execute arbitrary code in the context of an unprivileged process. This issue is rated as High due to the possibility of remote code execution in an application that uses this library.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0409 A-31999646 High All 6.0, 6.0.1, 7.0, 7.1.1 Google internal

Elevation of privilege vulnerability in Java.Net

An elevation of privilege in the Java.Net library could enable malicious web content to redirect a user to another website without explicit permission. This issue is rated as High because it is a remote bypass of user interaction requirements.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2016-5552 A-31858037 High All 7.0, 7.1.1 Sep 30, 2016

Elevation of privilege vulnerability in Framework APIs

An elevation of privilege vulnerability in the Framework APIs could enable a local malicious application to execute arbitrary code within the context of a privileged process. This issue is rated as High because it could be used to gain local access to elevated capabilities, which are not normally accessible to a third-party application.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0410 A-31929765 High All 5.0.2, 5.1.1, 6.0, 6.0.1, 7.0, 7.1.1 Oct 2, 2016 CVE-2017-0411 A-33042690 [2] High All 7.0, 7.1.1 Nov 21, 2016 CVE-2017-0412 A-33039926 [2] High All 7.0, 7.1.1 Nov 21, 2016

Elevation of privilege vulnerability in Mediaserver

An elevation of privilege vulnerability in Mediaserver could enable a local malicious application to execute arbitrary code within the context of a privileged process. This issue is rated as High because it could be used to gain local access to elevated capabilities, which are not normally accessible to a third-party application.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0415 A-32706020 High All 6.0, 6.0.1, 7.0, 7.1.1 Nov 4, 2016

Elevation of privilege vulnerability in Audioserver

An elevation of privilege vulnerability in Audioserver could enable a local malicious application to execute arbitrary code within the context of a privileged process. This issue is rated as High because it could be used to gain local access to elevated capabilities, which are not normally accessible to a third-party application.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0416 A-32886609 [2] High All 4.4.4, 5.0.2, 5.1.1, 6.0, 6.0.1, 7.0, 7.1.1 Google internal CVE-2017-0417 A-32705438 High All 4.4.4, 5.0.2, 5.1.1, 6.0, 6.0.1, 7.0, 7.1.1 Nov 7, 2016 CVE-2017-0418 A-32703959 [2] High All 4.4.4, 5.0.2, 5.1.1, 6.0, 6.0.1, 7.0, 7.1.1 Nov 7, 2016 CVE-2017-0419 A-32220769 High All 4.4.4, 5.0.2, 5.1.1, 6.0, 6.0.1, 7.0, 7.1.1 Oct 15, 2016

Information disclosure vulnerability in AOSP Mail

An information disclosure vulnerability in AOSP Mail could enable a local malicious application to bypass operating system protections that isolate application data from other applications. This issue is rated as High because it could be used to gain access to data that the application does not have access to.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0420 A-32615212 High All 4.4.4, 5.0.2, 5.1.1, 6.0, 6.0.1, 7.0, 7.1.1 Sep 12, 2016

Information disclosure vulnerability in AOSP Messaging

An information disclosure vulnerability in AOSP Messaging could enable a local malicious application to bypass operating system protections that isolate application data from other applications. This issue is rated as High because it could be used to gain access to data that the application does not have access to.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0413 A-32161610 High All 6.0, 6.0.1, 7.0, 7.1.1 Oct 13, 2016 CVE-2017-0414 A-32807795 High All 6.0, 6.0.1, 7.0, 7.1.1 Nov 10, 2016

Information disclosure vulnerability in Framework APIs

An information disclosure vulnerability in the Framework APIs could enable a local malicious application to bypass operating system protections that isolate application data from other applications. This issue is rated as High because it could be used to gain access to data that the application does not have access to.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0421 A-32555637 High All 5.0.2, 5.1.1, 6.0, 6.0.1, 7.0, 7.1.1 Google internal

Denial of service vulnerability in Bionic DNS

A denial of service vulnerability in Bionic DNS could enable a remote attacker to use a specially crafted network packet to cause a device hang or reboot. This issue is rated as High due to the possibility of remote denial of service.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0422 A-32322088 High All 4.4.4, 5.0.2, 5.1.1, 6.0, 6.0.1, 7.0, 7.1.1 Oct 20, 2016

Elevation of privilege vulnerability in Bluetooth

An elevation of privilege vulnerability in Bluetooth could enable a proximate attacker to manage access to documents on the device. This issue is rated as Moderate because it first requires exploitation of a separate vulnerability in the Bluetooth stack.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0423 A-32612586 Moderate All 5.0.2, 5.1.1, 6.0, 6.0.1, 7.0, 7.1.1 Nov 2, 2016

Information disclosure vulnerability in AOSP Messaging

An information disclosure vulnerability in AOSP Messaging could enable a remote attacker using a special crafted file to access data outside of its permission levels. This issue is rated as Moderate because it is a general bypass for a user level defense in depth or exploit mitigation technology in a privileged process.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0424 A-32322450 Moderate All 6.0, 6.0.1, 7.0, 7.1.1 Oct 20, 2016

Information disclosure vulnerability in Audioserver

An information disclosure vulnerability in Audioserver could enable a local malicious application to access data outside of its permission levels. This issue is rated as Moderate because it could be used to access sensitive data without permission.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0425 A-32720785 Moderate All 4.4.4, 5.0.2, 5.1.1, 6.0, 6.0.1, 7.0, 7.1.1 Nov 7, 2016

Information disclosure vulnerability in Filesystem

An information disclosure vulnerability in the Filesystem could enable a local malicious application to access data outside of its permission levels. This issue is rated as Moderate because it could be used to access sensitive data without permission.

CVE References Severity Updated Google devices Updated AOSP versions Date reported CVE-2017-0426 A-32799236 [2] Moderate All 7.0, 7.1.1 Google internal

2017-02-05 security patch level—Vulnerability details

In the sections below, we provide details for each of the security vulnerabilities that apply to the 2017-02-05 patch level. There is a description of the issue, a severity rationale, and a table with the CVE, associated references, severity, updated Google devices, updated AOSP versions (where applicable), and date reported. When available, we will link the public change that addressed the issue to the bug ID, like the AOSP change list. When multiple changes relate to a single bug, additional references are linked to numbers following the bug ID.

Remote code execution vulnerability in Qualcomm crypto driver

A remote code execution vulnerability in the Qualcomm crypto driver could enable a remote attacker to execute arbitrary code within the context of the kernel. This issue is rated as Critical due to the possibility of remote code execution in the context of the kernel.

CVE References Severity Updated Google devices Date reported CVE-2016-8418 A-32652894

QC-CR#1077457 Critical None* Oct 10, 2016

* Supported Google devices on Android 7.0 or later that have installed all available updates are not affected by this vulnerability.

Elevation of privilege vulnerability in kernel file system

An elevation of privilege vulnerability in the kernel file system could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as Critical due to the possibility of a local permanent device compromise, which may require reflashing the operating system to repair the device.

CVE References Severity Updated Google devices Date reported CVE-2017-0427 A-31495866* Critical Nexus 5X, Nexus 6, Nexus 6P, Nexus 9, Android One, Pixel C, Nexus Player, Pixel, Pixel XL Sep 13, 2016

* The patch for this issue is not publicly available. The update is contained in the latest binary drivers for Nexus devices available from the Google Developer site.

Elevation of privilege vulnerability in NVIDIA GPU driver

An elevation of privilege vulnerability in the NVIDIA GPU driver could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as Critical due to the possibility of a local permanent device compromise, which may require reflashing the operating system to repair the device.

CVE References Severity Updated Google devices Date reported CVE-2017-0428 A-32401526*

N-CVE-2017-0428 Critical Nexus 9 Oct 25, 2016 CVE-2017-0429 A-32636619*

N-CVE-2017-0429 Critical Nexus 9 Nov 3, 2016

* The patch for this issue is not publicly available. The update is contained in the latest binary drivers for Nexus devices available from the Google Developer site.

Elevation of privilege vulnerability in kernel networking subsystem

An elevation of privilege vulnerability in the kernel networking subsystem could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as Critical due to the possibility of a local permanent device compromise, which may require reflashing the operating system to repair the device.

CVE References Severity Updated Google devices Date reported CVE-2014-9914 A-32882659

Upstream kernel Critical Nexus 6, Nexus Player Nov 9, 2016

Elevation of privilege vulnerability in Broadcom Wi-Fi driver

An elevation of privilege vulnerability in the Broadcom Wi-Fi driver could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as Critical due to the possibility of a local permanent device compromise, which may require reflashing the operating system to repair the device.

CVE References Severity Updated Google devices Date reported CVE-2017-0430 A-32838767*

B-RB#107459 Critical Nexus 6, Nexus 6P, Nexus 9, Pixel C, Nexus Player Google internal

* The patch for this issue is not publicly available. The update is contained in the latest binary drivers for Nexus devices available from the Google Developer site.

Vulnerabilities in Qualcomm components

The following vulnerability affects Qualcomm components and is described in further detail in Qualcomm AMSS September 2016 security bulletin.

CVE References Severity* Updated Google devices Date reported CVE-2017-0431 A-32573899** Critical None*** Qualcomm internal

* The severity rating for these vulnerabilities was determined by the vendor.

** The patch for this issue is not publicly available. The update is contained in the latest binary drivers for Nexus devices available from the Google Developer site.

*** Supported Google devices on Android 7.0 or later that have installed all available updates are not affected by this vulnerability.

Elevation of privilege vulnerability in MediaTek driver

An elevation of privilege vulnerability in the MediaTek driver could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as High because it first requires compromising a privileged process.

CVE References Severity Updated Google devices Date reported CVE-2017-0432 A-28332719*

M-ALPS02708925 High None** Apr 21, 2016

* The patch for this issue is not publicly available. The update is contained in the latest binary drivers for Nexus devices available from the Google Developer site.

** Supported Google devices on Android 7.0 or later that have installed all available updates are not affected by this vulnerability.

Elevation of privilege vulnerability in Synaptics touchscreen driver

An elevation of privilege vulnerability in the Synaptics touchscreen driver could enable a local malicious application to execute arbitrary code within the context of the touchscreen chipset. This issue is rated as High because it first requires compromising a privileged process.

CVE References Severity Updated Google devices Date reported CVE-2017-0433 A-31913571* High Nexus 6P, Nexus 9, Android One, Pixel, Pixel XL Sep 8, 2016 CVE-2017-0434 A-33001936* High Pixel, Pixel XL Nov 18, 2016

* The patch for this issue is not publicly available. The update is contained in the latest binary drivers for Nexus devices available from the Google Developer site.

Elevation of privilege vulnerability in Qualcomm Secure Execution Environment Communicator driver

An elevation of privilege vulnerability in the Qualcomm Secure Execution Environment Communicator drive could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as High because it first requires compromising a privileged process.

CVE References Severity Updated Google devices Date reported CVE-2016-8480 A-31804432

QC-CR#1086186 [2] High Nexus 5X, Nexus 6, Nexus 6P, Android One, Pixel, Pixel XL Sep 28, 2016

Elevation of privilege vulnerability in Qualcomm sound driver

An elevation of privilege vulnerability in the Qualcomm sound driver could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as High because it first requires compromising a privileged process.

CVE References Severity Updated Google devices Date reported CVE-2016-8481 A-31906415*

QC-CR#1078000 High Nexus 5X, Nexus 6P, Pixel, Pixel XL Oct 1, 2016 CVE-2017-0435 A-31906657*

QC-CR#1078000 High Nexus 5X, Nexus 6P, Pixel, Pixel XL Oct 1, 2016 CVE-2017-0436 A-32624661*

QC-CR#1078000 High Nexus 5X, Nexus 6P, Pixel, Pixel XL Nov 2, 2016

* The patch for this issue is not publicly available. The update is contained in the latest binary drivers for Nexus devices available from the Google Developer site.

Elevation of privilege vulnerability in Qualcomm Wi-Fi driver

An elevation of privilege vulnerability in the Qualcomm Wi-Fi driver could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as High because it first requires compromising a privileged process.

CVE References Severity Updated Google devices Date reported CVE-2017-0437 A-32402310

QC-CR#1092497 High Nexus 5X, Pixel, Pixel XL Oct 25, 2016 CVE-2017-0438 A-32402604

QC-CR#1092497 High Nexus 5X, Pixel, Pixel XL Oct 25, 2016 CVE-2017-0439 A-32450647

QC-CR#1092059 High Nexus 5X, Pixel, Pixel XL Oct 25, 2016 CVE-2016-8419 A-32454494

QC-CR#1087209 High Nexus 5X, Pixel, Pixel XL Oct 26, 2016 CVE-2016-8420 A-32451171

QC-CR#1087807 High Nexus 5X, Pixel, Pixel XL Oct 26, 2016 CVE-2016-8421 A-32451104

QC-CR#1087797 High Nexus 5X, Pixel, Pixel XL Oct 26, 2016 CVE-2017-0440 A-33252788

QC-CR#1095770 High Nexus 5X, Pixel, Pixel XL Nov 11, 2016 CVE-2017-0441 A-32872662

QC-CR#1095009 High Nexus 5X, Pixel, Pixel XL Nov 11, 2016 CVE-2017-0442 A-32871330

QC-CR#1092497 High Nexus 5X, Pixel, Pixel XL Nov 13, 2016 CVE-2017-0443 A-32877494

QC-CR#1092497 High Nexus 5X, Pixel, Pixel XL Nov 13, 2016 CVE-2016-8476 A-32879283

QC-CR#1091940 High Nexus 5X, Pixel, Pixel XL Nov 14, 2016

Elevation of privilege vulnerability in Realtek sound driver

An elevation of privilege vulnerability in the Realtek sound driver could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as High because it first requires compromising a privileged process.

CVE References Severity Updated Google devices Date reported CVE-2017-0444 A-32705232* High Nexus 9 Nov 7, 2016

* The patch for this issue is not publicly available. The update is contained in the latest binary drivers for Nexus devices available from the Google Developer site.

Elevation of privilege vulnerability in HTC touchscreen driver

An elevation of privilege vulnerability in the HTC touchscreen driver could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as High because it first requires compromising a privileged process.

CVE References Severity Updated Google devices Date reported CVE-2017-0445 A-32769717* High Pixel, Pixel XL Nov 9, 2016 CVE-2017-0446 A-32917445* High Pixel, Pixel XL Nov 15, 2016 CVE-2017-0447 A-32919560* High Pixel, Pixel XL Nov 15, 2016

* The patch for this issue is not publicly available. The update is contained in the latest binary drivers for Nexus devices available from the Google Developer site.

Information disclosure vulnerability in NVIDIA video driver

An information disclosure vulnerability in the NVIDIA video driver could enable a local malicious application to access data outside of its permission levels. This issue is rated as High because it could be used to access sensitive data without explicit user permission.

CVE References Severity Updated Google devices Date reported CVE-2017-0448 A-32721029*

N-CVE-2017-0448 High Nexus 9 Nov 7, 2016

* The patch for this issue is not publicly available. The update is contained in the latest binary drivers for Nexus devices available from the Google Developer site.

Elevation of privilege vulnerability in Broadcom Wi-Fi driver

An elevation of privilege vulnerability in the Broadcom Wi-Fi driver could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as Moderate because it first requires compromising a privileged process and is mitigated by current platform configurations.

CVE References Severity Updated Google devices Date reported CVE-2017-0449 A-31707909*

B-RB#32094 Moderate Nexus 6, Nexus 6P Sep 23, 2016

* The patch for this issue is not publicly available. The update is contained in the latest binary drivers for Nexus devices available from the Google Developer site.

Elevation of privilege vulnerability in Audioserver

An elevation of privilege vulnerability in Audioserver could enable a local malicious application to execute arbitrary code within the context of a privileged process. This issue is rated as Moderate because it is mitigated by current platform configurations.

CVE References Severity Updated Google devices Date reported CVE-2017-0450 A-32917432* Moderate Nexus 9 Nov 15, 2016

* The patch for this issue is not publicly available. The update is contained in the latest binary drivers for Nexus devices available from the Google Developer site.

Elevation of privilege vulnerability in kernel file system

An elevation of privilege vulnerability in the kernel file system could enable a local malicious application to bypass protections that prevent an escalation of privileges. This issue is rated as Moderate because it is a general bypass for a user level defense in depth or exploit mitigation technology.

CVE References Severity Updated Google devices Date reported CVE-2016-10044 A-31711619* Moderate Nexus 5X, Nexus 6, Nexus 6P, Nexus 9, Android One, Pixel C, Nexus Player, Pixel, Pixel XL Google internal

* The patch for this issue is not publicly available. The update is contained in the latest binary drivers for Nexus devices available from the Google Developer site.

Information disclosure vulnerability in Qualcomm Secure Execution Environment Communicator

An information disclosure vulnerability in the Qualcomm Secure Execution Environment Communicator could enable a local malicious application to access data outside of its permission levels. This issue is rated as Moderate because it first requires compromising a privileged process.

CVE References Severity Updated Google devices Date reported CVE-2016-8414 A-31704078

QC-CR#1076407 Moderate Nexus 5X, Nexus 6P, Android One, Pixel, Pixel XL Sep 23, 2016

Information disclosure vulnerability in Qualcomm sound driver

An information disclosure vulnerability in the Qualcomm sound driver could enable a local malicious application to access data outside of its permission levels. This issue is rated as Moderate because it first requires compromising a privileged process.

CVE References Severity Updated Google devices Date reported CVE-2017-0451 A-31796345

QC-CR#1073129 [2] Moderate Nexus 5X, Nexus 6P, Android One, Pixel, Pixel XL Sep 27, 2016

Common Questions and Answers

This section answers common questions that may occur after reading this bulletin.

1. How do I determine if my device is updated to address these issues?

To learn how to check a device's security patch level, read the instructions on the Pixel and Nexus update schedule.

Security patch levels of 2017-02-01 or later address all issues associated with the 2017-02-01 security patch level.

Security patch levels of 2017-02-05 or later address all issues associated with the 2017-02-05 security patch level and all previous patch levels.

Device manufacturers that include these updates should set the patch string level to:

[ro.build.version.security_patch]:[2017-02-01]

[ro.build.version.security_patch]:[2017-02-05]

2. Why does this bulletin have two security patch levels?

This bulletin has two security patch levels so that Android partners have the flexibility to fix a subset of vulnerabilities that are similar across all Android devices more quickly. Android partners are encouraged to fix all issues in this bulletin and use the latest security patch level.

Devices that use the February 1, 2017 security patch level must include all issues associated with that security patch level, as well as fixes for all issues reported in previous security bulletins.

Devices that use the security patch level of February 5, 2017 or newer must include all applicable patches in this (and previous) security bulletins.

Partners are encouraged to bundle the fixes for all issues they are addressing in a single update.

3. How do I determine which Google devices are affected by each issue?

In the 2017-02-01 and 2017-02-05 security vulnerability details sections, each table has an Updated Google devices column that covers the range of affected Google devices updated for each issue. This column has a few options:

All Google devices : If an issue affects All and Pixel devices, the table will have "All" in the Updated Google devices column. "All" encapsulates the following supported devices: Nexus 5X, Nexus 6, Nexus 6P, Nexus 9, Android One, Nexus Player, Pixel C, Pixel, and Pixel XL.

: If an issue affects All and Pixel devices, the table will have "All" in the Updated Google devices column. "All" encapsulates the following supported devices: Nexus 5X, Nexus 6, Nexus 6P, Nexus 9, Android One, Nexus Player, Pixel C, Pixel, and Pixel XL. Some Google devices : If an issue doesn't affect all Google devices, the affected Google devices are listed in the Updated Google devices column.

: If an issue doesn't affect all Google devices, the affected Google devices are listed in the Updated Google devices column. No Google devices: If no Google devices running Android 7.0 are affected by the issue, the table will have "None" in the Updated Google devices column.

4. What do the entries in the references column map to?

Entries under the References column of the vulnerability details table may contain a prefix identifying the organization to which the reference value belongs. These prefixes map as follows:

Prefix Reference A- Android bug ID QC- Qualcomm reference number M- MediaTek reference number N- NVIDIA reference number B- Broadcom reference number

Revisions