@Ghisy posted below #4:
@henihazbay posted a better format post about the December update here:
https://support.google.com/pixelphone/thread/139017133/google-pixel-update-december-2021?hl=en:
Other source for changes (more technical) below:
https://source.android.com/security/bulletin/pixel/2021-12-01
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.
From Android Police:
It's coming to supported Pixel devices today, but Pixel 6 and 6 Pro users will have to wait a little longer. Google says those phones are getting their updates sometime later this month.
@henihazbay posted a better format post about the December update here:
https://support.google.com/pixelphone/thread/139017133/google-pixel-update-december-2021?hl=en:

Camille V.Community Manager
1 hr
Google Pixel Update - December 2021
Hello Pixel Community,
We have provided the monthly software update for December 2021. All supported Pixel devices running Android 12 will receive these software updates as part of the December 2021 update, which begins rolling out to users today. The rollout will continue over the next month in phases depending on carrier and device. The rollout will start on Pixel 6 and Pixel 6 Pro later this month. We will provide an update to this post once it is available. Users will receive a notification once it becomes available. We encourage you to check your Android version and update to receive the latest software.
Details of this month’s security fixes can be found on the Android Security Bulletin:
https://source.android.com/security/bulletin
Thanks,
Google Pixel Support Team
Software versions
Global
- Pixel 3a (XL): SQ1A.211205.008
- Pixel 4 (XL): SQ1A.211205.008
- Pixel 4a: SQ1A.211205.008
- Pixel 4a (5G): SQ1A.211205.008
- Pixel 5: SQ1A.211205.008
- Pixel 5a (5G): SQ1A.211205.008
What’s included
In addition to new features, the December 2021 update includes several fixes and improvements across many areas including device performance, stability, connectivity, and more – see below for some notable improvements.
Apps
Audio
- Fix for issue causing Assistant to unintentionally start a phone call in certain conditions *[1].
- Fix for stuck or frozen app UI in certain conditions *[7].
Battery & Power
- General fixes & improvements for audio playback issues in certain apps *[1].
- Fix for issue causing audio noise in videos captured while using certain phone cases *[1].
- Fix for issue causing microphone to cut out during calls in certain conditions *[1].
- Fix for issue causing occasional audio glitch when adjusting volume levels *[1].
- Fix for issue occasionally preventing audio playback from speaker in certain conditions *[1].
- Fix for issue preventing Now Playing to search for unrecognized music *[1].
Biometrics
- Additional improvements for battery charging information shown in notification shade *[4].
- General improvements for battery & thermal performance in certain conditions *[7].
- General improvements for wireless charging in certain conditions *[5].
- Improvements for alignment detection on Pixel Stand in certain conditions *[5].
- Fix for issues occasionally causing incorrect Battery usage accounting to display in Settings *[7].
Bluetooth
- General improvements for fingerprint sensor stability & performance *[1].
- Additional fixes for issues preventing enrollment of new fingerprints in certain conditions *[1].
- General improvements for face unlock stability & performance *[6].
Camera
- General Bluetooth stability improvements for certain conditions *[3].
- Fix for distorted audio over Bluetooth in certain scenarios *[1].
- Fix for issue causing Bluetooth to turn on after disabling in certain conditions *[7].
- Fix for volume adjustment issues with certain Bluetooth audio devices *[7].
Display & Graphics
- General image quality improvements in camera preview/capture *[1].
- General improvements for camera stability & performance *[1].
- General improvements for auto-focus response in certain capture modes *[1].
- General improvements for color consistency in viewfinder preview *[1].
- Fix for issue causing blank viewfinder preview in certain conditions *[1].
Framework
- Enable ANGLE graphics support library for certain apps and games *[1].
- Add additional example images for display color options in Settings *[7].
- General improvements to keep the screen on after multiple manual wakes *[7].
- General improvements for Adaptive brightness response in certain conditions *[7].
- Fix for occasional screen flicker during brightness adjustment *[1].
- Fix for issue preventing Smooth Display to switch display refresh rate in certain conditions *[1].
- Fix for issue causing screen flicker after locking or unlocking device in certain conditions *[1].
- Fix for occasional white screen flash after display goes to sleep *[7].
Media
- Fix for issue causing app icons to display as pending downloads after installation completes *[7].
- Fix for issue causing Play store app installation to pause indefinitely in certain conditions *[7].
- Fix for issue occasionally preventing Work Profile setup to complete in certain conditions *[7].
- Fix for issue preventing all settings or apps to be restored from backup during setup in certain conditions *[7].
Network & Telephony
- Fix for issue causing system crash during media playback in certain conditions *[7].
Sensors
- General improvements for network connection stability & performance *[7].
- Fix for crash in Settings when toggling Airplane mode on certain network configurations *[7].
- Fix for issue that disabled call features on certain devices or networks in certain conditions *[1].
System
- General improvements for sensor stability & response in certain conditions *[2].
- General improvements for Quick Tap response & performance *[2].
- General improvements for Auto-rotate response in certain device orientations *[4].
- General improvements for Adaptive brightness response in certain conditions *[7].
- Fix for issue preventing lift to wake and double tap to wake in certain conditions *[1].
- Fix for issue preventing Always-on-display from turning on in certain conditions *[1].
- Fix for issue causing unexpected haptics or vibration in certain conditions *[1].
User Interface
- Kernel update to 4.9.279 for Pixel 3a & Pixel 3a XL.
- Kernel update to 4.14.243 for Pixel 4, Pixel 4 XL & Pixel 4a.
- Kernel update to 4.19.202 for Pixel 4a (5G), Pixel 5 & Pixel 5a (5G).
- General improvements for system stability & performance *[7]
- Fix for issue causing device to freeze after sleeping while charging in certain conditions *[1].
- Fix for issue occasionally preventing OTA updates to install *[7].
Wi-Fi
- Add Material You dynamic theming support for the device boot animation *[7].
- Improvements for Internet tile in Quick Settings *[7].
- Improvements for Quick Settings layout in certain device orientations *[7].
- Fix for issue causing display to stay on during wireless charging *[5].
- Fix for issue causing Game Dashboard icon to display over lock screen *[7].
- Fix for issue causing incorrect colors or theme to display in Quick Settings in certain conditions *[7].
- Fix for issue causing lock screen icons to display in notification shade in certain conditions *[7].
- Fix for issue causing notification History & Clear all buttons to occasionally display incorrectly *[7].
- Fix for issue causing persistent app media controls in notification shade in certain conditions *[7].
- Fix for issue causing persistent call notification in certain conditions *[7].
- Fix for issue causing persistent Turn off work apps button in app drawer *[7].
- Fix for issue causing screen flicker after locking or unlocking device in certain conditions *[7].
- Fix for issue causing Settings to crash in Conversations menu in certain conditions *[7].
- Fix for issue causing undismissable Game Dashboard button during gameplay in certain conditions *[7].
- Fix for issue causing app drawer to scroll to the top after clearing search query *[7].
- Fix for issue causing certain home screen icons to appear misaligned in certain conditions *[7].
- Fix for issue enabling Quick Settings toggles to be tapped from home screen in certain conditions *[7].
- Fix for issue hiding date or time in Quick Settings in certain conditions *[7].
- Fix for issue occasionally causing blank background on home screen after setting wallpaper *[7].
- Fix for issue occasionally causing Quick Settings to pull down after unlocking device *[7].
- Fix for issue occasionally causing UI elements to display with transparent backgrounds *[7].
- Fix for issue occasionally displaying Work Profile badge icon on personal apps or contacts *[7].
- Fix for issue preventing conversation bubble to be dismissed in certain conditions *[7].
- Fix for issue preventing search results to display in Settings in certain conditions *[7].
- Fix for occasional screen flicker in notification shade when dragging from top of screen *[7].
- Fix for occasional flickering when quickly switching between apps in certain conditions *[7].
- General improvements for Wi-Fi stability & performance *[7].
- Fix for issue that would occasionally disconnect device from Wi-Fi in certain conditions *[1].
----------------------------------------------------------------
Device Applicability
*[1] Included on Pixel 6 & Pixel 6 Pro
*[2] Included on Pixel 4a (5G), Pixel 5, Pixel 5a (5G), Pixel 6 & Pixel 6 Pro
*[3] Included on Pixel 4a (5G), Pixel 5, Pixel 5a (5G)
*[4] Included on Pixel 4, Pixel 4 XL, Pixel 4a, Pixel 4a (5G), Pixel 5, Pixel 5a (5G), Pixel 6 & Pixel 6 Pro
*[5] Included on Pixel 4 / XL, Pixel 5, Pixel 6 & Pixel 6 Pro
*[6] Included on Pixel 4 & Pixel 4 XL
*[7] Included on Pixel 3a, Pixel 3a XL, Pixel 4, Pixel 4 XL, Pixel 4a, Pixel 4a (5G), Pixel 5, Pixel 5a (5G), Pixel 6 & Pixel 6 Pro
Other source for changes (more technical) below:
https://source.android.com/security/bulletin/pixel/2021-12-01
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.
Note: The Google device firmware images are available on the Google Developer site.
Announcements
- 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.
Android TV
CVE References Type Severity Updated AOSP versions CVE-2021-1000 A-185190688 EoP Moderate 12 CVE-2021-1033 A-185247656 EoP Moderate 12 Framework
CVE References Type Severity Updated AOSP versions CVE-2021-0981 A-191981182 EoP Moderate 12 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-2021-0983 A-192245204 ID Moderate 12 CVE-2021-0986 A-192247339 ID Moderate 12 CVE-2021-0988 A-191954233 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 Messaging
CVE References Type Severity Updated AOSP versions CVE-2021-0973 A-197328178 ID Moderate 12 System
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 kernelEoP Moderate Kernel CVE-2021-23134 A-188883590
Upstream kernelEoP Moderate NFC CVE-2021-33200 A-190011721
Upstream kernel [2] [3]EoP Moderate Kernel CVE-2021-39656 A-174049066
Upstream kernelEoP Moderate Kernel CVE-2021-39636 A-120612905
Upstream kernel [2] [3] [4] [5]ID Moderate Kernel CVE-2021-39648 A-160822094
Upstream kernelID Moderate Kernel CVE-2021-39657 A-194696049
Upstream kernelID Moderate Kernel Pixel
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 CVE-2021-30298 A-190408641
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.
3. What do the entries in the References column mean?
Abbreviation Definition RCE Remote code execution EoP Elevation of privilege ID Information disclosure DoS Denial of service N/A Classification not available
Entries under the References column of the vulnerability details table may contain a prefix identifying the organization to which the reference value belongs.
4. What does an * next to the Android bug ID in the References column mean?
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
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.
Versions
Version Date Notes 1.0 December 6, 2021 Bulletin Released
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