Android Automotive OS Update Bulletin—November 2021

Published November 1, 2021

The Android Automotive OS (AAOS) Update Bulletin contains details of security vulnerabilities affecting the Android Automotive OS platform. The full AAOS update comprises the security patch level of 2021-11-05 or later from the November 2021 Android Security Bulletin in addition to all issues in this bulletin.

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

Announcements

• There are no Android Automotive OS security patches in the November 2021 Android Automotive OS Update Bulletin.

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 Google device update schedule.

Security patch levels of 2021-11-01 or later address all issues associated with the 2021-11-01 security patch level.

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

• [ro.build.version.security_patch]:[2021-11-01]

For some devices on Android 10 or later, the Google Play system update will have a date string that matches the 2021-11-01 security patch level. Please see this article for more details on how to install security updates.

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?

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?

Issues that are not publicly available have an * next to the corresponding reference ID. 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 device / partner security bulletins, such as the Pixel bulletin?

Security vulnerabilities that are documented in this security bulletin are required to declare the latest security patch level on Android devices. Additional security vulnerabilities that are documented in the device / partner security bulletins are not required for declaring a security patch level. Android device and chipset manufacturers may also publish security vulnerability details specific to their products, such as Google, Huawei, LGE, Motorola, Nokia, or Samsung.

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