CVE-2021-3022
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 · uneditedAn issue was discovered on LG mobile devices with Android OS 10 software. There was no write protection for the MTK protect2 partition. The LG ID is LVE-SMP-200028 (January 2021).
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 confidenceThis vulnerability in LG mobile devices running Android OS 10 lacks write protection for the MTK (MediaTek) protect2 partition. The protect2 partition typically stores sensitive security-related data such as DRM keys, secure boot parameters, or firmware components. Without write protection, malicious actors could potentially modify this partition to bypass security mechanisms or escalate privileges.
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= 10.0CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
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 checksWork through these to decide whether this CVE applies to you.
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Confirm device is LG running Android 10Check Settings > About Phone to verify the device manufacturer is LG and Android version is 10.0Affected if Device is an LG model with Android version 10.0
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Identify MediaTek chipsetCheck the processor/chipset information in device settings or through system diagnostic toolsAffected if Device uses a MediaTek (MTK) processor
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Locate protect2 partitionList disk partitions using fdisk, parted, or similar partition listing utility to identify the protect2 partitionAffected if protect2 partition exists on the device storage
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Check protect2 write protection statusInspect block device attributes or mount options for the protect2 partition to determine if write protection is enabledAffected if protect2 partition shows no write protection or is writable
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Verify security patch levelCheck Settings > About Phone > Software Information for the security patch dateAffected if Security patch level predates the LVE-SMP-200028 fix (device remains unpatched)
A device is affected if it is an LG phone running Android 10 with a MediaTek chipset where the protect2 partition lacks write protection and the security patch is older than the fix.
Generated from the published advisory. Verify against your own configuration.
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 dataLG has released this issue under LVE-SMP-200028. Users should apply vendor-provided security updates as they become available. Enterprise security teams should inventory affected devices and prioritize patching schedules.
- Consultation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-3022 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-3022 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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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.
- 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