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    November 2022
    Product Security Bulletin

    Published 2022-11-07

    The MediaTek Product Security Bulletin contains details of security vulnerabilities affecting MediaTek Smartphone, Tablet, AIoT, Smart display, Smart platform and OTT 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 and OTT 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-2022-32601, CVE-2022-32602
    Medium CVE-2022-26446, CVE-2022-21778, CVE-2022-32603, CVE-2022-32605, CVE-2022-32607, CVE-2022-32608, CVE-2022-32609, CVE-2022-32610, CVE-2022-32611, CVE-2022-32612, CVE-2022-32613, CVE-2022-32614, CVE-2022-32615, CVE-2022-32616, CVE-2022-32617, CVE-2022-32618

    Details

    CVE CVE-2022-32601
    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 permission bypass 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, MT8795T, MT8797, MT8798
    Affected Software Versions Android 10.0, 11.0, 12.0

    CVE CVE-2022-32602
    Title Improper input validation in keyinstall
    Severity High
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In keyinstall, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6833, MT6883, MT6983, MT8183, MT8185, MT8321, MT8385, MT8675, MT8765, MT8766, MT8768, MT8786, MT8789, MT8791, MT8791T, MT8797
    Affected Software Versions Android 11.0, 12.0

    CVE CVE-2022-26446
    Title Reachable assertion in Modem 4G RRC
    Severity Medium
    Vulnerability Type DoS
    CWE CWE-617 Reachable Assertion
    Description In Modem 4G RRC, there is a possible system crash due to improper input validation. This could lead to remote denial of service, when concatenating improper SIB12 (CMAS message), with no additional execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT2731, MT2735, MT6297, MT6725, MT6739, MT6761, MT6762, MT6762D, MT6762M, MT6763, MT6765, MT6765T, MT6767, MT6768, MT6769, MT6769T, MT6769Z, MT6771, MT6779, MT6781, MT6783, MT6785, MT6785T, MT6789, MT6833, MT6853, MT6855, MT6873, MT6875, MT6877, MT6879, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT6895, MT6983, MT8385, MT8666, MT8667, MT8675, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797
    Affected Software Versions Modem LR12A, LR13, NR15, NR16

    CVE CVE-2022-21778
    Title Improper input validation in vpu
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In vpu, there is a possible information disclosure 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 MT6771, MT6779, MT6785, MT6853, MT6853T, MT6873, MT6877, MT6885, MT6891, MT6893, MT8168, MT8175, MT8183, MT8365, MT8385, MT8788
    Affected Software Versions Android 10.0, 11.0, 12.0

    CVE CVE-2022-32603
    Title Improper input validation in gpu drm
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In gpu drm, there is a possible out of bounds write due to improper input validation. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6879, MT6893, MT6895, MT6985, MT8795T, MT8798
    Affected Software Versions Android 12.0

    CVE CVE-2022-32605
    Title Improper input validation in isp
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In isp, there is a possible out of bounds write 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 MT6879, MT6895, MT6983
    Affected Software Versions Android 12.0

    CVE CVE-2022-32607
    Title Improper input validation in aee
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In aee, there is a possible use after free 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, MT6739, MT6761, MT6762, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT8167, MT8167S, MT8168, MT8173, MT8175, MT8362A, MT8365, MT8385, MT8666, MT8675, MT8696, MT8765, MT8766, MT8768, MT8786, MT8788, MT8791, MT8791T, MT8795T, MT8797, MT8871, MT8891
    Affected Software Versions Android 11.0, 12.0

    CVE CVE-2022-32608
    Title Time-of-check time-of-use (toctou) race condition in jpeg
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
    Description In jpeg, 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 MT6893, MT6895
    Affected Software Versions Android 12.0

    CVE CVE-2022-32609
    Title Improper synchronization in vcu
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-662 Improper Synchronization
    Description In vcu, 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 MT6762, MT6768, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT8168, MT8185, MT8365, MT8696, MT8768, MT8786, MT8789, MT8791, MT8797, MT8798
    Affected Software Versions Android 11.0, 12.0, 13.0

    CVE CVE-2022-32610
    Title Improper synchronization in vcu
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-662 Improper Synchronization
    Description In vcu, 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 MT6762, MT6768, MT6769, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT8168, MT8185, MT8365, MT8696, MT8768, MT8786, MT8789, MT8791, MT8797, MT8798
    Affected Software Versions Android 11.0, 12.0, 13.0

    CVE CVE-2022-32611
    Title Improper input validation in isp
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In isp, 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 MT6879, MT6895, MT6983
    Affected Software Versions Android 11.0, 12.0

    CVE CVE-2022-32612
    Title Concurrent execution using shared resource with improper synchronization ('race condition') in vcu
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-662 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
    Description In vcu, 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 MT6762, MT6768, MT6769, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT8168, MT8185, MT8365, MT8696, MT8768, MT8786, MT8789, MT8791, MT8797, MT8798
    Affected Software Versions Android 11.0, 12.0, 13.0

    CVE CVE-2022-32613
    Title Concurrent execution using shared resource with improper synchronization ('race condition') in vcu
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-662 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
    Description In vcu, there is a possible memory corruption 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 MT6762, MT6768, MT6769, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT8168, MT8185, MT8365, MT8696, MT8768, MT8786, MT8789, MT8791, MT8797, MT8798
    Affected Software Versions Android 11.0, 12.0, 13.0

    CVE CVE-2022-32614
    Title Double free in audio
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-415 Double Free
    Description In audio, there is a possible memory corruption due to a logic error. 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, MT6893, MT6983, MT8168, MT8365, MT8797, MT8798
    Affected Software Versions Android 12.0

    CVE CVE-2022-32615
    Title Improper input validation in ccd
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In ccd, there is a possible out of bounds write due to uninitialized data. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6983, MT8871, MT8891
    Affected Software Versions Android 12.0

    CVE CVE-2022-32616
    Title Improper input validation in isp
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In isp, there is a possible out of bounds write due to uninitialized data. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6983, MT8871, MT8891
    Affected Software Versions Android 12.0

    CVE CVE-2022-32617
    Title Incorrect calculation of buffer size in typec
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-131 Incorrect Calculation of Buffer Size
    Description In typec, there is a possible out of bounds write due to an incorrect calculation of buffer size. 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 MT6789, MT6855, MT6895, MT6983, MT8798
    Affected Software Versions Android 11.0, 12.0, 13.0

    CVE CVE-2022-32618
    Title Incorrect calculation of buffer size in typec
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-131 Incorrect Calculation of Buffer Size
    Description In typec, there is a possible out of bounds write due to an incorrect calculation of buffer size. 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 MT6833, MT6873, MT6893, MT8798
    Affected Software Versions Android 11.0, 12.0, 13.0

    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 November 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.

    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.