Pixel Update Bulletin—December 2021

Published December 6, 2021 | Updated June 28, 2022

The Pixel Update Bulletin contains details of security vulnerabilities and functional improvements affecting supported Pixel devices (Google devices). For Google devices, security patch levels of 2021-12-05 or later address all issues in this bulletin and all issues in the December 2021 Android Security Bulletin. To learn how to check a device's security patch level, see Check and update your Android version.

All supported Google devices will receive an update to the 2021-12-05 patch level. We encourage all customers to accept these updates to their devices.


  • In addition to the security vulnerabilities described in the December 2021 ndroid Security Bulletin, Google devices also contain patches for the security vulnerabilities described below.

Security patches

Vulnerabilities are grouped under the component that they affect. There is a description of the issue and a table with the CVE, associated references, type of vulnerability, severity, and updated Android Open Source Project (AOSP) versions (where applicable). When available, we 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.


CVE References Type Severity Updated AOSP versions
CVE-2021-0984 A-192475653 EoP Moderate 12
CVE-2021-0985 A-190403923 EoP Moderate 12
CVE-2021-1019 A-195031401 EoP Moderate 12
CVE-2021-1024 A-191283525 EoP Moderate 12
CVE-2021-0978 A-192587406 ID Moderate 12
CVE-2021-0979 A-191772737 ID Moderate 12
CVE-2021-0982 A-192368508 ID Moderate 12
CVE-2021-0986 A-192247339 ID Moderate 12
CVE-2021-0988 A-191954233 [2] ID Moderate 12
CVE-2021-1009 A-189858128 ID Moderate 12
CVE-2021-1010 A-189857801 ID Moderate 12
CVE-2021-1011 A-188219307 ID Moderate 12
CVE-2021-1013 A-186404356 ID Moderate 12
CVE-2021-1030 A-194697001 ID Moderate 12
CVE-2021-1031 A-194697004 ID Moderate 12
CVE-2021-1032 A-184745603 ID Moderate 12
CVE-2021-0993 A-193849901 DoS Moderate 12

Media Framework

CVE References Type Severity Updated AOSP versions
CVE-2021-1003 A-189857506 EoP Moderate 12
CVE-2021-1027 A-193033243 EoP Moderate 12
CVE-2021-1028 A-193034683 EoP Moderate 12
CVE-2021-1029 A-193034677 EoP Moderate 12
CVE-2021-0976 A-199680600 ID Moderate 12
CVE-2021-0998 A-193442575 ID Moderate 12
CVE-2021-1001 A-190435883 ID Moderate 12
CVE-2021-1002 A-194533433 ID Moderate 12
CVE-2021-1018 A-194110891 ID Moderate 12


CVE References Type Severity Updated AOSP versions
CVE-2021-0973 A-197328178 ID Moderate 12


CVE References Type Severity Updated AOSP versions
CVE-2021-0769 A-184676316 EoP Moderate 12
CVE-2021-0977 A-183487770 EoP Moderate 12
CVE-2021-0992 A-180104327 EoP Moderate 12
CVE-2021-0999 A-196858999 EoP Moderate 12
CVE-2021-1004 A-197749180 EoP Moderate 12
CVE-2021-1016 A-183610267 EoP Moderate 12
CVE-2021-1017 A-182583850 EoP Moderate 12
CVE-2021-1020 A-195111725 EoP Moderate 12
CVE-2021-1021 A-195031703 EoP Moderate 12
CVE-2021-0987 A-190619791 ID Moderate 12
CVE-2021-0989 A-194105812 ID Moderate 12
CVE-2021-0990 A-185591180 ID Moderate 12
CVE-2021-0991 A-181588752 ID Moderate 12
CVE-2021-0994 A-193801134 ID Moderate 12
CVE-2021-0995 A-197536547 ID Moderate 12
CVE-2021-0996 A-181346545 ID Moderate 12
CVE-2021-0997 A-191086488 ID Moderate 12
CVE-2021-1005 A-186530889 ID Moderate 12
CVE-2021-1006 A-183961974 ID Moderate 12
CVE-2021-1007 A-167759047 ID Moderate 12
CVE-2021-1012 A-195412179 ID Moderate 12
CVE-2021-1014 A-186776740 ID Moderate 12
CVE-2021-1015 A-186530496 ID Moderate 12
CVE-2021-1023 A-195963373 ID Moderate 12
CVE-2021-1025 A-193800652 ID Moderate 12
CVE-2021-1026 A-194798757 ID Moderate 12
CVE-2021-1034 A-193441322 ID Moderate 12
CVE-2021-1008 A-197327688 DoS Moderate 12
CVE-2021-1022 A-180420059 DoS Moderate 12

Kernel components

CVE References Type Severity Component
CVE-2020-25668 A-190228658
Upstream kernel
EoP Moderate Kernel
CVE-2021-23134 A-188883590
Upstream kernel
EoP Moderate NFC
CVE-2021-33200 A-190011721
Upstream kernel [2] [3]
EoP Moderate Kernel
CVE-2021-39656 A-174049066
Upstream kernel
EoP Moderate Kernel
CVE-2021-39636 A-120612905
Upstream kernel [2] [3] [4] [5]
ID Moderate Kernel
CVE-2021-39648 A-160822094
Upstream kernel
ID Moderate Kernel
CVE-2021-39657 A-194696049
Upstream kernel
ID Moderate Kernel


CVE References Type Severity Component
CVE-2021-39639 A-198291476 * EoP High Bootloader
CVE-2021-39640 A-157294279 * EoP High USB
CVE-2021-39644 A-199809304 * EoP High Bootloader
CVE-2021-39645 A-199805112 * EoP High Bootloader
CVE-2021-1047 A-197966306 * ID High Titan M2
CVE-2021-39638 A-195607566 * EoP Moderate Camera
CVE-2021-39641 A-126949257 * EoP Moderate Bootloader
CVE-2021-39642 A-195731663 * EoP Moderate Camera
CVE-2021-39643 A-195573629 * EoP Moderate Titan M2
CVE-2021-39649 A-174049006 * EoP Moderate Audio
CVE-2021-39650 A-169763055 * EoP Moderate Kernel
CVE-2021-39651 A-193438173 * EoP Moderate Biometrics
CVE-2021-39652 A-194499021 * EoP Moderate Touch
CVE-2021-39653 A-193443223 * EoP Moderate Bootloader
CVE-2021-39655 A-192641593 * EoP Moderate Kernel
CVE-2021-1046 A-195609074 * ID Moderate Camera
CVE-2021-39637 A-193579873 * ID Moderate System
CVE-2021-39646 A-201537251 * ID Moderate Bootloader
CVE-2021-39647 A-198713939 * ID Moderate Bootloader

Qualcomm components

CVE References Severity Component
QC-CR#2873209 [2]
Moderate Kernel

Functional patches

For details on the new bug fixes and functional patches included in this release, refer to the Pixel Community forum.

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?

Security patch levels of 2021-12-05 or later address all issues associated with the 2021-12-05 security patch level and all previous patch levels. To learn how to check a device's security patch level, read the instructions on the Google device update schedule.

2. What do the entries in the Type column mean?

Entries in the Type column of the vulnerability details table reference the classification of the security vulnerability.

Abbreviation Definition
RCE Remote code execution
EoP Elevation of privilege
ID Information disclosure
DoS Denial of service
N/A Classification not available

3. What do the entries in the References column mean?

Entries under the References column of the vulnerability details table may contain a prefix identifying the organization to which the reference value belongs.

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

4. What does an * next to the Android bug ID in the References column mean?

Issues that are not publicly available have an * next to the Android bug ID in the References column. The update for that issue is generally contained in the latest binary drivers for Pixel devices available from the Google Developer site.

5. Why are security vulnerabilities split between this bulletin and the Android Security Bulletins?

Security vulnerabilities that are documented in the Android Security Bulletins are required to declare the latest security patch level on Android devices. Additional security vulnerabilities, such as those documented in this bulletin are not required for declaring a security patch level.


Version Date Notes
1.0 December 6, 2021 Bulletin Released
1.1 December 8, 2021 Bulletin revised to include AOSP links
1.2 January 20, 2022 Updated issue list
1.3 June 28, 2022 Updated issue list