Headline
CVE-2022-20042: February 2022
In Bluetooth, there is a possible information disclosure due to incorrect error handling. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS06108487; Issue ID: ALPS06108487.
February 2022 Product Security Bulletin
Published 2022-02-07
The MediaTek Product Security Bulletin contains details of security vulnerabilities affecting MediaTek Smartphone, Tablet, AIoT and Smart display 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-2022-20024, CVE-2022-20025, CVE-2022-20026, CVE-2022-20027, CVE-2022-20028
Medium
CVE-2022-20029, CVE-2022-20030, CVE-2022-20031, CVE-2022-20032, CVE-2022-20033, CVE-2022-20017, CVE-2022-20034, CVE-2022-20035, CVE-2022-20036, CVE-2022-20037, CVE-2022-20038, CVE-2022-20039, CVE-2022-20040, CVE-2022-20041, CVE-2022-20042, CVE-2022-20043, CVE-2022-20044, CVE-2022-20045, CVE-2022-20046
****Details****
CVE
CVE-2022-20024
Title
Improper input validation in system service
Severity
High
Vulnerability Type
EoP
CWE
CWE-20 Improper Input Validation
Description
In system service, 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, MT6739, MT6750, MT6761, MT6762, MT6763, MT6765, MT6768, MT6771, MT6779, MT8167, MT8168, MT8173, MT8175, MT8185, MT8321, MT8362A, MT8365, MT8385, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797
Affected Software Versions
Android 11.0, 12.0
CVE
CVE-2022-20025
Title
Stack-based buffer overflow in Bluetooth
Severity
High
Vulnerability Type
EoP
CWE
CWE-121 Stack-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-2022-20026
Title
Stack-based buffer overflow in Bluetooth
Severity
High
Vulnerability Type
EoP
CWE
CWE-122 Stack-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-2022-20027
Title
Stack-based buffer overflow in Bluetooth
Severity
High
Vulnerability Type
EoP
CWE
CWE-123 Stack-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-2022-20028
Title
Stack-based buffer overflow in Bluetooth
Severity
High
Vulnerability Type
EoP
CWE
CWE-123 Stack-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-2022-20029
Title
Out-of-bounds read in cmdq driver
Severity
Medium
Vulnerability Type
ID
CWE
CWE-125 Out-of-bounds Read
Description
In cmdq driver, there is a possible out of bounds read due to an incorrect bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.
Affected Chipsets
MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6785, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT8163, MT8167, MT8168, MT8173, MT8175, MT8183, MT8321, MT8362A, MT8365, MT8385, MT8735B, MT8765, MT8766, MT8768, MT8786, MT8788, MT8791, MT8797
Affected Software Versions
Android 10.0, 11.0, 12.0
CVE
CVE-2022-20030
Title
Stack-based buffer overflow in vow driver
Severity
Medium
Vulnerability Type
EoP
CWE
CWE-121 Stack-based Buffer Overflow
Description
In vow driver, there is a possible out of bounds write due to a stack-based buffer overflow. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
Affected Chipsets
MT6781, MT6785, MT6833, MT6853, MT6853T, MT6873, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT8185, MT8789, MT8791, MT8797
Affected Software Versions
Android 10.0, 11.0, 12.0
CVE
CVE-2022-20031
Title
Use after free in fb driver
Severity
Medium
Vulnerability Type
EoP
CWE
CWE-416 Use After Free
Description
In fb driver, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Affected Chipsets
MT6580, MT6582E, MT6582H, MT6582T, MT6582W, MT6582_90, MT6589, MT6589TD, MT6592E, MT6592H, MT6592T, MT6592W, MT6592_90, MT6595, MT6731, MT6732, MT6735, MT6737, MT6739, MT6750, MT6750S, MT6752, MT6753, MT6755, MT6755S, MT6757, MT6757C, MT6757CD, MT6757CH, MT6758, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6795, MT6797, MT6799, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893
Affected Software Versions
Android 10.0, 11.0
CVE
CVE-2022-20032
Title
Out-of-bounds read in vow driver
Severity
Medium
Vulnerability Type
ID
CWE
CWE-125 Out-of-bounds Read
Description
In vow driver, there is a possible memory corruption due to a race condition. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.
Affected Chipsets
MT6781, MT6785, MT6833, MT6853, MT6853T, MT6873, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT8185, MT8789, MT8791, MT8797
Affected Software Versions
Android 10.0, 11.0, 12.0
CVE
CVE-2022-20033
Title
Out-of-bounds read in camera driver
Severity
Medium
Vulnerability Type
ID
CWE
CWE-125 Out-of-bounds Read
Description
In camera driver, there is a possible out of bounds read due to an incorrect bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.
Affected Chipsets
MT6739, MT6761, MT6765, MT6768, MT6771, MT6779, MT6781, MT6833, MT6853, MT6853T, MT6873, MT6877, MT6883, MT6885, MT6889, MT6893, MT8167, MT8168, MT8173, MT8362A, MT8365
Affected Software Versions
Android 11.0, 12.0
CVE
CVE-2022-20017
Title
Exposure of sensitive information to an unauthorized actor in ion driver
Severity
Medium
Vulnerability Type
ID
CWE
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Description
In ion driver, there is a possible information disclosure due to an incorrect bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
Affected Chipsets
MT6765, MT6785, MT6833, MT6853, MT6873, MT6877, MT6885, MT6893, MT8167, MT8168, MT8173, MT8175, MT8185, MT8321, MT8362A, MT8365, MT8385, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797
Affected Software Versions
Android 10.0, 11.0, 12.0
CVE
CVE-2022-20034
Title
Improper authentication in Preloader XFLASH
Severity
Medium
Vulnerability Type
EoP
CWE
CWE-287 Improper Authentication
Description
In Preloader XFLASH, there is a possible escalation of privilege due to an improper certificate validation. This could lead to local escalation of privilege for an attacker who has physical access to the device with no additional execution privileges needed. User interaction is not needed for exploitation.
Affected Chipsets
MT6580, MT6735, MT6739, MT6761, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6799, MT6833, MT6853, MT6873, MT6875, MT6877, MT6885, MT6891, MT6893
Affected Software Versions
Android 11.0
CVE
CVE-2022-20035
Title
Use after free in vcu driver
Severity
Medium
Vulnerability Type
EoP
CWE
CWE-416 Use After Free
Description
In vcu driver, there is a possible information disclosure due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
Affected Chipsets
MT6768, MT6769, MT6779, MT6781, MT6785, MT6833, MT6853, MT6853T, MT6873, MT6877, MT6885, MT6890, MT6891, MT6893, MT8167, MT8168, MT8173, MT8175, MT8185, MT8321, MT8362A, MT8365, MT8385, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797
Affected Software Versions
Android 10.0, 11.0
CVE
CVE-2022-20036
Title
Exposure of sensitive information to an unauthorized actor in ion driver
Severity
Medium
Vulnerability Type
ID
CWE
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Description
In ion driver, there is a possible information disclosure due to an incorrect bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
Affected Chipsets
MT6735, MT6737, MT6739, MT6750, MT6750S, MT6753, MT6755, MT6755S, MT6757, MT6757C, MT6757CD, MT6757CH, MT6758, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6795, MT6797, MT6799, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8167, MT8168, MT8173, MT8175, MT8185, MT8321, MT8362A, MT8365, MT8385, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791
Affected Software Versions
Android 10.0, 11.0
CVE
CVE-2022-20037
Title
Exposure of sensitive information to an unauthorized actor in ion driver
Severity
Medium
Vulnerability Type
ID
CWE
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Description
In ion driver, there is a possible information disclosure due to an incorrect bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
Affected Chipsets
MT6735, MT6737, MT6739, MT6750, MT6750S, MT6753, MT6755, MT6755S, MT6757, MT6757C, MT6757CD, MT6757CH, MT6758, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6795, MT6797, MT6799, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8167, MT8168, MT8173, MT8175, MT8185, MT8321, MT8362A, MT8365, MT8385, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797
Affected Software Versions
Android 10.0, 11.0
CVE
CVE-2022-20038
Title
Improper restriction of operations within the bounds of a memory buffer in ccu driver
Severity
Medium
Vulnerability Type
EoP
CWE
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
Description
In ccu driver, there is a possible memory corruption due to an incorrect bounds check. 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, MT6885, MT6893, MT8791, MT8797
Affected Software Versions
Android 11.0
CVE
CVE-2022-20039
Title
Integer overflow or wraparound in ccu driver
Severity
Medium
Vulnerability Type
EoP
CWE
CWE-190 Integer Overflow or Wraparound
Description
In ccu driver, there is a possible memory corruption due to an integer overflow. 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, MT6883, MT6893, MT8791, MT8797
Affected Software Versions
Android 11.0
CVE
CVE-2022-20040
Title
Stack-based buffer overflow in power_hal_manager_service
Severity
Medium
Vulnerability Type
EoP
CWE
CWE-121 Stack-based Buffer Overflow
Description
In power_hal_manager_service, there is a possible permission bypass due to a stack-based buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Affected Chipsets
MT6735, MT6737, MT6739, MT6755, MT6757, MT6761, MT6771, MT6779, MT6785, MT6833, MT6853, MT6873, MT6875, MT6877, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8167, MT8168, MT8173, MT8175, MT8185, MT8321, MT8362A, MT8365, MT8385, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797
Affected Software Versions
Android 11.0, 12.0
CVE
CVE-2022-20041
Title
Improper privilege management in Bluetooth
Severity
Medium
Vulnerability Type
EoP
CWE
CWE-269 Improper Privilege Management
Description
In Bluetooth, there is a possible escalation of privilege 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
MT8167, MT8175, MT8183, MT8362A, MT8365, MT8385
Affected Software Versions
Android 8.1, 9.0, 10.0, 11.0, 12.0
CVE
CVE-2022-20042
Title
Exposure of sensitive information to an unauthorized actor in Bluetooth
Severity
Medium
Vulnerability Type
ID
CWE
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Description
In Bluetooth, there is a possible information disclosure due to incorrect error handling. This could lead to local information disclosure 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-2022-20043
Title
Improper privilege management in Bluetooth
Severity
Medium
Vulnerability Type
EoP
CWE
CWE-269 Improper Privilege Management
Description
In Bluetooth, there is a possible escalation of privilege 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
MT8167, MT8175, MT8183, MT8362A, MT8365, MT8385
Affected Software Versions
Android 8.1, 9.0, 10.0, 11.0, 12.0
CVE
CVE-2022-20044
Title
Use after free in Bluetooth
Severity
Medium
Vulnerability Type
EoP
CWE
CWE-416 Use After Free
Description
In Bluetooth, there is a possible service crash due to a use after free. 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-2022-20045
Title
Use after free in Bluetooth
Severity
Medium
Vulnerability Type
EoP
CWE
CWE-416 Use After Free
Description
In Bluetooth, there is a possible service crash due to a use after free. 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-2022-20046
Title
Missing release of memory after effective lifetime in Bluetooth
Severity
Medium
Vulnerability Type
DoS
CWE
CWE-401 Missing Release of Memory after Effective Lifetime
Description
In Bluetooth, there is a possible memory corruption due to a logic error. This could lead to local denial of service 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
****Vulnerability Type Definition****
Abbreviation
Definition
RCE
Remote Code Execution
EoP
Elevation of Privilege
ID
Information Disclosure
DoS
Denial of Service
N/A
Classification not available
****Versions****
Version
Date
Description
1.0
February 7, 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.