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    October 2022
    Product Security Bulletin

    Published 2022-10-03

    The MediaTek Product Security Bulletin contains details of security vulnerabilities affecting MediaTek Smartphone, Tablet, AIoT, Smart display, Smart platform, OTT and Wi-Fi 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).

    The MediaTek Product Security Bulletin contains details of security vulnerabilities affecting MediaTek Smartphone, Tablet, AIoT, Smart display, Smart platform, OTT and Wi-Fi 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-2022-26471, CVE-2022-26472
    Medium CVE-2022-26452, CVE-2022-26473, CVE-2022-26474, CVE-2022-26475, CVE-2022-32589, CVE-2022-32590, CVE-2022-32591, CVE-2022-32592, CVE-2022-32593

    Details

    CVE CVE-2022-26471
    Title Deserialization of untrusted data in telephony
    Severity High
    Vulnerability Type EoP
    CWE CWE-502 Deserialization of Untrusted Data
    Description In telephony, there is a possible escalation of privilege due to a parcel format mismatch. 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, MT6761, MT6765, MT6768, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6877, MT6879, MT6883, MT6885, MT6889, MT6893, MT6895, MT6983, MT8321, MT8385, MT8666, MT8675, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797
    Affected Software Versions Android 12.0

    CVE CVE-2022-26472
    Title Deserialization of untrusted data in ims
    Severity High
    Vulnerability Type EoP
    CWE CWE-502 Deserialization of Untrusted Data
    Description In ims, there is a possible escalation of privilege due to a parcel format mismatch. This could lead to local escalation of privilege 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, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT8321, MT8385, MT8666, MT8675, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797
    Affected Software Versions Android 10.0, 11.0, 12.0

    CVE CVE-2022-26452
    Title Improper synchronization in isp
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-662 Improper Synchronization
    Description In isp, 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 MT6879, MT6895, MT6983
    Affected Software Versions Android 12.0

    CVE CVE-2022-26473
    Title Improper synchronization in vdec fmt
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-662 Improper Synchronization
    Description In vdec fmt, 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 MT6789, MT6855, MT6879, MT6895, MT6983, MT8168, MT8365, MT8695, MT8696, MT8798
    Affected Software Versions Android 12.0

    CVE CVE-2022-26474
    Title Incorrect calculation of buffer size in sensorhub
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-131 Incorrect Calculation of Buffer Size
    Description In sensorhub, there is a possible out of bounds write due to an incorrect calculation of buffer size. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6789, MT6855, MT6879, MT6895, MT6983
    Affected Software Versions Android 12.0

    CVE CVE-2022-26475
    Title Improper input validation in wlan
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In wlan, 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, MT6762, MT6765, MT6768, MT6769, MT6779, MT6781, MT6785, MT6789, MT6853, MT6855, MT6873, MT6875, MT6879, MT6883, MT6885, MT6889, MT6895, MT6983, MT7663, MT7902, MT7921, MT8167S, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8512A, MT8518, MT8532, MT8667, MT8695, MT8696, MT8766, MT8768, MT8786, MT8788, MT8789
    Affected Software Versions Android 11.0, 12.0 and Yocto 3.1, 3.3

    CVE CVE-2022-32589
    Title Improper resource shutdown or release in Wi-Fi driver
    Severity Medium
    Vulnerability Type DoS
    CWE CWE-404 Improper Resource Shutdown or Release
    Description In Wi-Fi driver, there is a possible way to disconnect Wi-Fi due to an improper resource release. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6761, MT6762, MT6765, MT6768, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT7663, MT7668, MT7902, MT7921, MT8167S, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8512A, MT8518, MT8532, MT8667, MT8766, MT8768, MT8786, MT8788, MT8789
    Affected Software Versions Android 11.0, 12.0 and Yocto 3.1, 3.3

    CVE CVE-2022-32590
    Title Improper check or handling of exceptional conditions in wlan
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-703 Improper Check or Handling of Exceptional Conditions
    Description In wlan, there is a possible use after free due to an incorrect status check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6761, MT6762, MT6765, MT6768, MT6769, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT7663, MT7668, MT7902, MT7921, MT8167S, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8512A, MT8518, MT8532, MT8667, MT8695, MT8696, MT8766, MT8768, MT8786, MT8788, MT8789
    Affected Software Versions Android 11.0, 12.0 and Yocto 3.1, 3.3

    CVE CVE-2022-32591
    Title Improper input validation in ril
    Severity Medium
    Vulnerability Type DoS
    CWE CWE-20 Improper Input Validation
    Description In ril, there is a possible system crash due to an incorrect bounds check. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6580, MT6739, MT6753, MT6757, MT6761, MT6762, MT6763, MT6765, MT6768, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6885, MT6893, MT6895, MT6983, MT8321, MT8385, MT8666, MT8675, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797
    Affected Software Versions Android 11.0, 12.0

    CVE CVE-2022-32592
    Title Improper input validation in cpu dvfs
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In cpu dvfs, 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 MT6855, MT6879, MT6895, MT6983, MT8185, MT8321, MT8385, MT8518, MT8666, MT8675, MT8765, MT8768, MT8786, MT8788, MT8789
    Affected Software Versions Android 11.0, 12.0 and Yocto 3.1, 3.3

    CVE CVE-2022-32593
    Title Improper input validation in vowe
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In vowe, 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 MT6983
    Affected Software Versions Android 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 October 3, 2022 Bulletin published.
    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.

    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.