Headline
CVE-2023-35694: Pixel Update Bulletin—July 2023
In DMPixelLogger_ProcessDmCommand of DMPixelLogger.cpp, there is a possible out of bounds read due to a missing bounds check. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
Published July 5, 2023
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 2023-07-05 or later address all issues in this bulletin and all issues in the July 2023 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 2023-07-05 patch level. We encourage all customers to accept these updates to their devices.
Announcements
- In addition to the security vulnerabilities described in the July 2023 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
Subcomponent
CVE-2023-21400
A-264663832 *
EoP
Moderate
Kernel io_uring
CVE-2023-35693
A-274172774
Upstream kernel
EoP
Moderate
Incremental File System (IncFS)
Pixel
CVE
References
Type
Severity
Subcomponent
CVE-2023-21399
A-275462898 *
EoP
Critical
GSC
CVE-2023-35691
A-273851762 *
DoS
Critical
Titan M
CVE-2023-35692
A-275950631 *
EoP
High
Telephony
CVE-2023-35694
A-267619655 *
ID
High
samsung_slsi
Qualcomm components
CVE
References
Severity
Subcomponent
CVE-2023-21641
A-264422251
QC-CR#3261486
Moderate
Display
Qualcomm closed-source components
CVE
References
Severity
Subcomponent
CVE-2023-21624
A-264421675 *
Moderate
Closed-source component
CVE-2023-21633
A-242573066 *
Moderate
Closed-source component
CVE-2023-21635
A-242059611 *
Moderate
Closed-source component
CVE-2023-21637
A-242057682 *
Moderate
Closed-source component
CVE-2023-21638
A-264421868 *
Moderate
Closed-source component
CVE-2023-21639
A-264421888 *
Moderate
Closed-source component
CVE-2023-21640
A-264422309 *
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 2023-07-05 or later address all issues associated with the 2023-07-05 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.
Versions
Version
Date
Notes
1.0
July 5, 2023
Bulletin Published
Related news
It was discovered that the IP-VLAN network driver for the Linux kernel did not properly initialize memory in some situations, leading to an out-of- bounds write vulnerability. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. It was discovered that the virtual terminal driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). Various other issues were also addressed.
Ubuntu Security Notice 6348-1 - Daniel Moghimi discovered that some Intel Processors did not properly clear microarchitectural state after speculative execution of various instructions. A local unprivileged user could use this to obtain to sensitive information. Tavis Ormandy discovered that some AMD processors did not properly handle speculative execution of certain vector register instructions. A local attacker could use this to expose sensitive information.
Ubuntu Security Notice 6332-1 - Daniel Moghimi discovered that some Intel Processors did not properly clear microarchitectural state after speculative execution of various instructions. A local unprivileged user could use this to obtain to sensitive information. William Zhao discovered that the Traffic Control subsystem in the Linux kernel did not properly handle network packet retransmission in certain situations. A local attacker could use this to cause a denial of service.
Ubuntu Security Notice 6330-1 - Daniel Moghimi discovered that some Intel Processors did not properly clear microarchitectural state after speculative execution of various instructions. A local unprivileged user could use this to obtain to sensitive information. Tavis Ormandy discovered that some AMD processors did not properly handle speculative execution of certain vector register instructions. A local attacker could use this to expose sensitive information.
Ubuntu Security Notice 6325-1 - Daniel Moghimi discovered that some Intel Processors did not properly clear microarchitectural state after speculative execution of various instructions. A local unprivileged user could use this to obtain to sensitive information. Tavis Ormandy discovered that some AMD processors did not properly handle speculative execution of certain vector register instructions. A local attacker could use this to expose sensitive information.
Ubuntu Security Notice 6315-1 - Daniel Moghimi discovered that some Intel Processors did not properly clear microarchitectural state after speculative execution of various instructions. A local unprivileged user could use this to obtain to sensitive information. Tavis Ormandy discovered that some AMD processors did not properly handle speculative execution of certain vector register instructions. A local attacker could use this to expose sensitive information.
Debian Linux Security Advisory 5480-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.