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Mt7603 FirmwareOperating system · Mediatek

CVE-2022-32657

MEDIUM · 6.7 CVSS v3.1 Published 2023-01-03
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
Remediation priority · Elevated
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In Wi-Fi driver, there is a possible undefined behavior due to incorrect error handling. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: GN20220705042; Issue ID: GN20220705042.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

This is a Wi-Fi driver vulnerability where incorrect error handling leads to undefined behavior, allowing a local attacker with System-level execution privileges to escalate to higher privileges. The bug resides in the driver code itself and does not require user interaction to exploit. The vulnerability is addressed by patch ID GN20220705042.

MitigationApply the vendor patch (GN20220705042) to update the Wi-Fi driver, ensuring compatibility with existing systems and verifying Wi-Fi functionality post-patch.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Mt7603 FirmwareOperating system
Affected:= 7.6.6.0
Mt7613 FirmwareOperating system
Affected:= 7.6.6.0
Mt7615 FirmwareOperating system
Affected:= 7.6.6.0
Mt7622 FirmwareOperating system
Affected:= 7.6.6.0
Mt7628 FirmwareOperating system
Affected:= 7.6.6.0
Mt7629 FirmwareOperating system
Affected:= 7.6.6.0
Mt7915 FirmwareOperating system
Affected:= 7.6.6.0
Mt7916 FirmwareOperating system
Affected:= 7.6.6.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify Mediatek Wi-Fi chip model
    Check system information, device inventory, or Wi-Fi adapter details to determine if the system uses a Mediatek Wi-Fi chip (Mt7603, Mt7613, Mt7615, Mt7622, Mt7628, Mt7629, Mt7915, or Mt7916). On Linux, this can be done via 'lspci' or 'lsusb' for wireless adapters, or checking '/proc/version' and driver module information.
    Affected if The system contains any of the following chips: Mt7603, Mt7613, Mt7615, Mt7622, Mt7628, Mt7629, Mt7915, or Mt7916.
  2. Retrieve Wi-Fi firmware version
    Query the installed Wi-Fi firmware version through the device firmware interface, system logs, or vendor management tools. On embedded systems, this may require accessing '/sys/class/net/wlan*/device/firmware_version' or using 'iw' commands like 'iw list'. On consumer devices, check the router or access point administration interface for firmware version details.
    Affected if The retrieved firmware version is exactly 7.6.6.0 for any affected Mediatek chip model.
  3. Check for patch GN20220705042
    Consult the vendor security advisory or device firmware changelog to verify whether patch ID GN20220705042 has been applied to the Wi-Fi driver. This may be reflected in the firmware version string, a build date, or a security patch level indicator.
    Affected if Patch GN20220705042 is not listed as applied or the firmware version remains at 7.6.6.0.
  4. Verify error handling configuration
    Review system logs, kernel messages (dmesg), or Wi-Fi driver debug output for any error handling anomalies, undefined behavior warnings, or error messages originating from the Mediatek Wi-Fi driver that may indicate the vulnerability is present.
    Affected if The driver shows error handling issues or undefined behavior symptoms consistent with CVE-2022-32657 in logs or driver state.

The environment is affected if any Mediatek Wi-Fi chip (Mt7603, Mt7613, Mt7615, Mt7622, Mt7628, Mt7629, Mt7915, or Mt7916) is running firmware version 7.6.6.0 without patch GN20220705042 applied.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the vendor patch (GN20220705042) to update the Wi-Fi driver, ensuring compatibility with existing systems and verifying Wi-Fi functionality post-patch.

Fix this in Mt7603 Firmware Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing4.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,640
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2022-32657 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data