CVE-2022-38977
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 · uneditedThe HwAirlink module has a heap overflow vulnerability.Successful exploitation of this vulnerability may cause out-of-bounds writes, resulting in modification of sensitive data.
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 confidenceHeap overflow vulnerability in HwAirlink module allowing out-of-bounds writes, enabling modification of sensitive data. The vulnerability stems from improper bounds checking during memory operations.
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= 2.0= 2.1CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/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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Identify HarmonyOS installationDetermine if the system or device is running Huawei HarmonyOS. This may be visible in system information, device properties, or firmware details.Affected if The system is running Huawei HarmonyOS
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Check HarmonyOS versionRetrieve the installed HarmonyOS version. Compare against the affected versions 2.0 and 2.1.Affected if The installed version is exactly 2.0 or exactly 2.1
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Locate HwAirlink moduleIdentify whether the HwAirlink module is present on the system. This may require examining system modules, kernel components, or network-related components depending on where HwAirlink operates.Affected if The HwAirlink module is present and loaded on the system
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Verify HwAirlink is activeDetermine if the HwAirlink module is actively in use or enabled. Check for running processes, loaded kernel modules, or active network interfaces related to Airlink functionality.Affected if HwAirlink is enabled and actively processing data
The environment is affected if HarmonyOS version 2.0 or 2.1 is installed AND the HwAirlink module is present and enabled, as the heap overflow requires both conditions to be exploitable.
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 dataImplement proper memory bounds validation in HwAirlink module; apply vendor patches when available; consider input sanitization and memory-safe coding practices.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,448.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-38977 — 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-2022-38977 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
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