Headline

CVE-2022-21787: July 2022

In audio DSP, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS06558844; Issue ID: ALPS06558844.

2 years ago

CVE

Open in Source

#vulnerability #web #android #dos #rce #buffer_overflow

July 2022 Product Security Bulletin

Published 2022-07-04

The MediaTek Product Security Bulletin contains details of security vulnerabilities affecting MediaTek Smartphone, Tablet, AIoT, Smart display, Smart platform, OTT and TV chipsets. Device OEMs have been notified of all the issues and the corresponding security patches for at least two months before publication.

The severity of the identified vulnerabilities was conducted based on the Common Vulnerability Scoring System version 3.1 (CVSS v3.1).

****Summary****

Severity

CVEs

High

CVE-2022-20082, CVE-2022-21763, CVE-2022-21764, CVE-2022-21744, CVE-2022-20083, CVE-2022-21767, CVE-2022-21768

Medium

CVE-2022-21765, CVE-2022-21766, CVE-2022-21769, CVE-2022-21770, CVE-2022-21771, CVE-2022-21772, CVE-2022-21773, CVE-2022-21774, CVE-2022-21775, CVE-2022-21776, CVE-2022-21777, CVE-2022-21779, CVE-2022-21780, CVE-2022-21781, CVE-2022-21782, CVE-2022-21783, CVE-2022-21784, CVE-2022-21785, CVE-2022-21786, CVE-2022-21787

****Details****

CVE

CVE-2022-20082

Title

Concurrent execution using shared resource with improper synchronization (‘race condition’) in GPU

Severity

High

Vulnerability Type

EoP

CWE

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (‘Race Condition’)

Description

In GPU, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6768, MT6769, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6893, MT6895, MT6983

Affected Software Versions

Android 10.0, 11.0, 12.0

CVE

CVE-2022-21763

Title

Improper access control in telecom service

Severity

High

Vulnerability Type

CWE

CWE-284 Improper Access Control

Description

In telecom service, there is a possible information disclosure due to a missing permission check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6739, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6795, MT6797, MT6799, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6879, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT6895, MT6983, MT6985, MT8321, MT8666, MT8667, MT8675, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797

Affected Software Versions

Android 10.0, 11.0, 12.0

CVE

CVE-2022-21764

Title

Improper access control in telecom service

Severity

High

Vulnerability Type

CWE

CWE-284 Improper Access Control

Description

Affected Chipsets

Affected Software Versions

Android 10.0, 11.0, 12.0

CVE

CVE-2022-21744

Title

Out-of-bounds write in Modem 2G RR

Severity

High

Vulnerability Type

RCE

CWE

CWE-787 Out-of-bounds Write

Description

In Modem 2G RR, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution when decoding GPRS Packet Neighbour Cell Data (PNCD) improper neighbouring cell size with no additional execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT2731, MT2735, MT6297, MT6725, MT6735, MT6737, MT6739, MT6750, MT6750S, MT6755, MT6757, MT6757P, MT6758, MT6761, MT6762, MT6762D, MT6762M, MT6763, MT6765, MT6765T, MT6767, MT6768, MT6769, MT6769T, MT6769Z, MT6771, MT6775, MT6779, MT6781, MT6783, MT6785, MT6785T, MT6789, MT6797, MT6799, MT6833, MT6853, MT6855, MT6873, MT6875, MT6877, MT6879, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT6895, MT6983, MT8666, MT8667, MT8675, MT8735A, MT8735B, MT8765, MT8766, MT8768, MT8771, MT8781, MT8786, MT8788, MT8789, MT8791, MT8797

Affected Software Versions

Modem LR9, LR11, LR12, LR12A, LR13, NR15, NR16

CVE

CVE-2022-20083

Title

Out-of-bounds write in Modem 2G/3G CC

Severity

High

Vulnerability Type

RCE

CWE

CWE-787 Out-of-bounds Write

Description

In Modem 2G/3G CC, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution when decoding combined FACILITY with no additional execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

Affected Software Versions

Modem LR9, LR11, LR12, LR12A, LR13, NR15, NR16

CVE

CVE-2022-21767

Title

Heap-based buffer overflow in Bluetooth

Severity

High

Vulnerability Type

EoP

CWE

CWE-122 Heap-based Buffer Overflow

Description

In Bluetooth, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT8167, MT8175, MT8183, MT8362A, MT8365, MT8385

Affected Software Versions

Android 8.1, 9.0, 10.0, 11.0, 12.0

CVE

CVE-2022-21768

Title

Heap-based buffer overflow in Bluetooth

Severity

High

Vulnerability Type

EoP

CWE

CWE-122 Heap-based Buffer Overflow

Description

Affected Chipsets

MT8167S, MT8175, MT8183, MT8362A, MT8365, MT8385

Affected Software Versions

Android 8.1, 9.0, 10.0, 11.0, 12.0

CVE

CVE-2022-21765

Title

Improper input validation in CCCI

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

In CCCI, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6580, MT6735, MT6737, MT6739, MT6753, MT6761, MT6765, MT6768, MT6771, MT6779, MT6781, MT6785, MT6833, MT6853, MT6873, MT6877, MT6879, MT6883, MT6885, MT6889, MT6893, MT6895, MT6983, MT8321, MT8666, MT8667, MT8675, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797

Affected Software Versions

Android 10.0, 11.0, 12.0

CVE

CVE-2022-21766

Title

Improper input validation in CCCI

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

Affected Chipsets

Affected Software Versions

Android 10.0, 11.0, 12.0

CVE

CVE-2022-21769

Title

Improper input validation in CCCI

Severity

Medium

Vulnerability Type

CWE

CWE-20 Improper Input Validation

Description

In CCCI, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

Affected Software Versions

Android 10.0, 11.0, 12.0

CVE

CVE-2022-21770

Title

Unix symbolic link (symlink) following in sound driver

Severity

Medium

Vulnerability Type

CWE

CWE-61 UNIX Symbolic Link (Symlink) Following

Description

In sound driver, there is a possible information disclosure due to symlink following. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6781, MT6877, MT6879, MT6893, MT6895, MT6983, MT8791, MT8797, MT8798

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21771

Title

Concurrent execution using shared resource with improper synchronization (‘race condition’) in GED driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (‘Race Condition’)

Description

In GED driver, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6580, MT6735, MT6737, MT6739, MT6753, MT6761, MT6765, MT6768, MT6771, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6873, MT6877, MT6879, MT6883, MT6885, MT6889, MT6893, MT6895, MT6983, MT8168, MT8365

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21772

Title

Concurrent execution using shared resource with improper synchronization (‘race condition’) in TEEI driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (‘Race Condition’)

Description

In TEEI driver, there is a possible type confusion due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6761, MT6765, MT6768, MT6771, MT6779, MT6833, MT6879, MT6885, MT6893, MT6895, MT6983, MT8185, MT8765, MT8766, MT8768, MT8785, MT8786, MT8788, MT8791, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21773

Title

Concurrent execution using shared resource with improper synchronization (‘race condition’) in TEEI driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (‘Race Condition’)

Description

In TEEI driver, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6580, MT6735, MT6737, MT6739, MT6750, MT6750S, MT6755, MT6755S, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6795, MT6797, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21774

Title

Concurrent execution using shared resource with improper synchronization (‘race condition’) in TEEI driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (‘Race Condition’)

Description

Affected Chipsets

MT6761, MT6765, MT6768, MT6771, MT6779, MT6781, MT6785, MT6833, MT6853, MT6875, MT6877, MT6879, MT6885, MT6893, MT6895, MT6983

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21775

Title

Improper synchronization in sched driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-662 Improper Synchronization

Description

In sched driver, there is a possible use after free due to improper locking. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6795, MT6797, MT6799, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT8167, MT8167S, MT8168, MT8173, MT8185, MT8321, MT8362A, MT8365, MT8385, MT8666, MT8675, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21776

Title

Concurrent execution using shared resource with improper synchronization (‘race condition’) in MDP

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (‘Race Condition’)

Description

In MDP, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6580, MT6739, MT6761, MT6765, MT6768, MT6771, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6873, MT6877, MT6879, MT6883, MT6885, MT6889, MT6893, MT6895, MT8163, MT8167, MT8167S, MT8168, MT8173, MT8175, MT8183, MT8185, MT8321, MT8362A, MT8365, MT8385, MT8666, MT8667, MT8675, MT8765, MT8766, MT8768, MT8786, MT8788, MT8791, MT8797, MT8798

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21777

Title

Improper access control in Autoboot

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-284 Improper Access Control

Description

In Autoboot, there is a possible permission bypass due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6580, MT6735, MT6739, MT6761, MT6765, MT6768, MT6771, MT6779, MT6785, MT6833, MT6853, MT6873, MT6875, MT6877, MT6879, MT6885, MT6891, MT6893, MT6895, MT6983, MT8167, MT8167S, MT8168, MT8173, MT8175, MT8185, MT8321, MT8362A, MT8365, MT8385, MT8666, MT8667, MT8675, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21779

Title

Improper input validation in WLAN driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

In WLAN driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6761, MT6779, MT6781, MT6833, MT6853, MT6873, MT6877, MT6879, MT6883, MT6885, MT6889, MT6893, MT6895, MT6983, MT8167S, MT8168, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8667, MT8675, MT8696, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21780

Title

Improper input validation in WLAN driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

Affected Chipsets

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21781

Title

Improper input validation in WLAN driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

Affected Chipsets

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21782

Title

Improper input validation in WLAN driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

Affected Chipsets

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21783

Title

Improper input validation in WLAN driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

Affected Chipsets

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21784

Title

Improper input validation in WLAN driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

Affected Chipsets

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21785

Title

Improper input validation in WLAN driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

Affected Chipsets

MT6877, MT6983, MT8167S, MT8168, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8667, MT8675, MT8695, MT8696, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21786

Title

Incorrect type conversion or cast in audio DSP

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-704 Incorrect Type Conversion or Cast

Description

In audio DSP, there is a possible memory corruption due to improper casting. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6833, MT6853, MT6873, MT6877, MT6879, MT6885, MT6893, MT6895, MT6983, MT8791, MT8797, MT8798

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21787

Title

Improper input validation in audio DSP

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

Affected Chipsets

MT6833, MT6853, MT6873, MT6877, MT6879, MT6885, MT6893, MT6895, MT6983, MT8791, MT8797, MT8798

Affected Software Versions

Android 11.0, 12.0

****Vulnerability Type Definition****

Abbreviation

Definition

RCE

Remote Code Execution

EoP

Elevation of Privilege

Information Disclosure

DoS

Denial of Service

N/A

Classification not available

****Versions****

Version

Date

Description

1.0

July 4, 2022

Bulletin published.

****Notes****

Information above is generated only at the time of creation of this Security Bulletin. The list of affected chipsets could be not complete. For any further information, device OEMs can reach your MediaTek contact person if needed.

If you want to report a security vulnerability in MediaTek chipsets or products, please go to Report Security Vulnerability page on MediaTek website.

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