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AndroidOperating system · Google

CVE-2022-32621

MEDIUM · 6.4 CVSS v3.1 Published 2022-12-05
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
66/100
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 isp, there is a possible out of bounds write 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. Patch ID: ALPS07310829; Issue ID: ALPS07310829.

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

Vulnerability in MediaTek's Image Signal Processor (ISP) driver where a race condition leads to an out-of-bounds write, allowing local privilege escalation from System execution privileges to elevated (root) access. The race condition suggests concurrent memory access during ISP operations causes the out-of-bounds write.

MitigationApply vendor patch ALPS07310829 - this is a MediaTek chipset firmware/driver update that must be obtained through device OEM channels. Check device security patch level and update to latest available.

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
AndroidOperating system
Affected:= 12.0

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
High
Privileges
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:H/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 the chipset vendor
    Check device information for MediaTek chipset. On Android, go to Settings > About Phone > SoC or use 'getprop ro.mediatek.platform' via ADB
    Affected if Device does not use a MediaTek chipset - this vulnerability only affects MediaTek components
  2. Confirm Android version 12.0
    Check Settings > About Phone > Android version or use 'getprop ro.build.version.release' via ADB
    Affected if Android version is 12.0 - the vulnerability affects this specific version per the CVE scope
  3. Verify security patch level
    Check Settings > About Phone > Security patch level or use 'getprop ro.build.version.security_patch' via ADB
    Affected if Security patch level is earlier than the vendor patch date for ALPS07310829 - this indicates the fix has not been applied
  4. Check if ISP driver module is active
    Check for loaded ISP/camera driver modules using 'lsmod' via ADB shell or check /proc/modules for isp-related modules
    Affected if The ISP driver module is loaded and running - the race condition occurs during active ISP operations

A device is affected if it uses a MediaTek chipset, runs Android 12.0, has a security patch level predating the ALPS07310829 fix, and has the ISP driver loaded.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor patch ALPS07310829 - this is a MediaTek chipset firmware/driver update that must be obtained through device OEM channels. Check device security patch level and update to latest available.

Recommended fix Moderate confidence
  1. 1. Contact your device manufacturer (OEM) to request the security patch containing MediaTek fix ALPS07310829
  2. 2. Apply the latest Android security update for your device, as this patch is delivered through the monthly Android Security Bulletin
  3. 3. Verify the patch has been applied by checking your device's security patch level under Settings > About Phone > Software Info > Security Patch Level
  4. 4. If your device manufacturer has not released this patch, consider upgrading to a device with ongoing security support
Caveat Patches are delivered through OEM firmware updates; custom ROMs may not include this fix

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Android Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,060
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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-2022-32621 in production — separate from our analysis above.

No notes yet

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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