Google releases April 2022 Android Security Bulletin and Google Device Images

Google has released the April 2022 Android Security Bulletin, giving carriers and device makers a fresh set of patches to install.

Though Google puts out the Android security patches each month, the job of actually getting the fixes to end users falls on the telcos and/or device manufacturers themselves. Those partners vary in their ability to release the patches in a timely fashion.

The Android Security Bulletin contains details of security vulnerabilities affecting Android devices. Security patch levels of 05-04-2022 or later address all of these issues.

The most severe of these issues is a high security vulnerability in the Framework component that could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. The severity assessment is based on the effect that exploiting the vulnerability would possibly have on an affected device, assuming the platform and service mitigations are turned off for development purposes or if successfully bypassed.

Alongside the bulletin, Google have released a security update to Google devices through an over-the-air (OTA) update. The Google device firmware images have also been released to the Google Developer site. Security patch levels of April 5, 2022 or later address all of these issues.

The tables below contains a list of security vulnerabilities, the Common Vulnerability and Exposures ID (CVE), the assessed severity, and whether or not Google devices are affected. The severity assessment is based on the effect that exploiting the vulnerability would possibly have on an affected device, assuming the platform and service mitigations are disabled for development purposes or if successfully bypassed.

Android and Google Service Mitigation’s

This is a summary of the mitigation’s provided by the Android security platform and service protections such as Google Play Protect. These capabilities reduce the likelihood that security vulnerabilities could be successfully exploited on Android.

Exploitation for many issues on Android is made more difficult by enhancements in newer versions of the Android platform. All users are encouraged to update to the latest version of Android where possible.The Android security team actively monitors for abuse through Google Play Protect and warns users about Potentially Harmful Applications. Google Play Protect is enabled by default on devices with Google Mobile Services, and is especially important for users who install apps from outside of Google Play. Terminology

You will find different types of vulnerabilities listed. Possible types include:

RCE – Remote code executionEoP – Elevation of privilegeID – Information disclosureDoS – Denial of serviceN/A – Classification not available 01-04-2022 security patch level—Vulnerability details Framework

The most severe vulnerability in this section could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVEReferencesTypeSeverityUpdated AOSP versionsCVE-2021-0694A-183147114EoPHigh11CVE-2021-39794A-205836329EoPHigh11, 12, 12LCVE-2021-39795A-201667614EoPHigh11, 12, 12LCVE-2021-39796A-205595291EoPHigh10, 11, 12, 12LCVE-2021-39797A-209607104EoPHigh12, 12LCVE-2021-39798A-213169612EoPHigh12, 12LCVE-2021-39799A-200288596EoPHigh12, 12L Media Framework

The most severe vulnerability in this section could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.

CVEReferencesTypeSeverityUpdated AOSP versionsCVE-2021-39803A-193790350IDHigh10, 11, 12, 12LCVE-2021-39804A-215002587DoSHigh11, 12, 12L System

The most severe vulnerability in this section could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVEReferencesTypeSeverityUpdated AOSP versionsCVE-2021-39808A-209966086EoPHigh10, 11, 12CVE-2021-39805A-212694559IDHigh12, 12LCVE-2021-39809A-205837191IDHigh10, 11, 12, 12L Google Play system updates

The following issues are included in Project Mainline components.

ComponentCVEMediaProviderCVE-2021-39795Media CodecsCVE-2021-39803 05-04-2022 security patch level—Vulnerability details System

The most severe vulnerability in this section could lead to local escalation of privilege from the Guest account with no additional execution privileges needed. User interaction is not needed for exploitation.

CVEReferencesTypeSeverityUpdated AOSP versionsCVE-2021-39807A-209446496EoPHigh10, 11, 12, 12L Kernel components

The most severe vulnerability in this section could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVEReferencesTypeSeverityComponentCVE-2021-0707A-155756045Upstream kernelEoPHighdma-bufCVE-2021-39801A-209791720Upstream kernelEoPHighIONCVE-2021-39802A-213339151Upstream kernelEoPHighMemory ManagementCVE-2021-39800A-208277166Upstream kernelIDHighION MediaTek components

These vulnerabilities affect MediaTek components and further details are available directly from MediaTek. The severity assessment of these issues is provided directly by MediaTek.

CVEReferencesSeverityComponentCVE-2022-20081A-218242055M-ALPS06461919HighA-GPSCVE-2021-25477A-220262213M-MOLY00684727HighModem LTE RRC Qualcomm components

These vulnerabilities affect Qualcomm components and are described in further detail in the appropriate Qualcomm security bulletin or security alert. The severity assessment of these issues is provided directly by Qualcomm.

CVEReferencesSeverityComponentCVE-2021-35081A-213239834QC-CR#3028274CriticalWLANCVE-2021-35112A-201574693QC-CR#3049280CriticalDisplayCVE-2021-35123A-213239948QC-CR#3032290CriticalBluetoothCVE-2021-30334A-213239835QC-CR#2963049QC-CR#3052789HighDisplayCVE-2021-35091A-204905109QC-CR#3008877HighDisplayCVE-2021-35095A-204905206QC-CR#2996895HighKernelCVE-2021-35130A-213240026QC-CR#3057133HighDisplay Qualcomm closed-source components

These vulnerabilities affect Qualcomm closed-source components and are described in further detail in the appropriate Qualcomm security bulletin or security alert. The severity assessment of these issues is provided directly by Qualcomm.

CVEReferencesSeverityComponentCVE-2021-30339A-202025975CriticalClosed-source componentCVE-2021-30341A-202024969CriticalClosed-source componentCVE-2021-30342A-202025860CriticalClosed-source componentCVE-2021-30343A-202025978CriticalClosed-source componentCVE-2021-30347A-202025598 CriticalClosed-source componentCVE-2021-35104A-213240044CriticalClosed-source componentCVE-2021-30281A-202025858HighClosed-source componentCVE-2021-30338A-202025859HighClosed-source componentCVE-2021-30340A-202025736HighClosed-source componentCVE-2021-30344A-192612963HighClosed-source componentCVE-2021-30345A-202025737HighClosed-source componentCVE-2021-30346A-202025862HighClosed-source componentCVE-2021-30349A-202025797HighClosed-source componentCVE-2021-30350A-202025979HighClosed-source componentCVE-2021-35070A-202025864HighClosed-source componentCVE-2021-35100A-213240046HighClosed-source component

Full details of the April 2022 Android Security Bulletin are available here.