Published September 14, 2021
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 2021-09-05 or later
address all issues in this bulletin and all issues in the
September 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
2021-09-05 patch level. We encourage all customers to
accept these updates to their devices.
Announcements
- In addition to the security vulnerabilities described in the September
2021 Android 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.
Kernel components
CVE
|
References
|
Type
|
Severity
|
Component
|
CVE-2021-3491
|
A-190877100
Upstream kernel
|
EoP
|
Moderate
|
io_uring
|
Pixel
CVE
|
References
|
Type
|
Severity
|
Component
|
CVE-2021-0869
|
A-179620905
*
|
RCE
|
High
|
dumpstate
|
Qualcomm components
Qualcomm closed-source components
CVE
|
References
|
|
Severity
|
Component
|
CVE-2021-1956
|
A-181676969
*
|
|
Moderate
|
Closed-source component
|
CVE-2021-1960
|
A-181677101
*
|
|
Moderate
|
Closed-source component
|
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 2021-09-05 or later address all issues associated
with the 2021-09-05 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
|
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.
Versions
Version
|
Date
|
Notes
|
1.0
|
September 7, 2021
|
Bulletin published
|
1.1
|
September 14, 2021
|
Bulletin revised to include AOSP links
|