CVE-2025-54637
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 · uneditedOut-of-bounds array access issue due to insufficient data verification in the kernel ambient light module. Impact: Successful exploitation of this vulnerability may affect service confidentiality.
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 is an out-of-bounds array access vulnerability in the kernel ambient light sensor driver, caused by insufficient input validation when processing ambient light data. The flaw allows a local attacker to read memory beyond allocated buffer boundaries, potentially exposing sensitive kernel memory contents and affecting service confidentiality.
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= 13.0.0= 14.0.0= 3.0.0= 3.1.0= 4.0.0CVSS 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
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 the operating systemCheck if the device runs Huawei EMUI or HarmonyOS by going to Settings > About Phone > Model or using the 'getprop ro.build.version.emui' or 'getprop ro.build.version.harmonyos' terminal commandAffected if The device is not running EMUI or HarmonyOS, then the CVE does not apply
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Check EMUI versionRun 'getprop ro.build.version.emui' in a terminal or check Settings > About Phone > EMUI versionAffected if The version displayed is exactly 13.0.0 or 14.0.0, indicating the device is running a vulnerable version
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Check HarmonyOS versionRun 'getprop ro.build.version.harmonyos' in a terminal or check Settings > About Phone > HarmonyOS versionAffected if The version displayed is exactly 3.0.0, 3.1.0, or 4.0.0, indicating the device is running a vulnerable version
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Verify ambient light sensor presenceCheck if the device has an ambient light sensor by reviewing hardware specifications in Settings > About Phone > Hardware, or by using sensor diagnostic apps that list available sensors including the light sensorAffected if The ambient light sensor is present and active; without the sensor, the vulnerable code path cannot be triggered
A user is affected if their Huawei device runs EMUI 13.0.0, EMUI 14.0.0, HarmonyOS 3.0.0, HarmonyOS 3.1.0, or HarmonyOS 4.0.0 and has an ambient light sensor that can be accessed by applications.
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 dataApply vendor-supplied kernel patches for the ambient light module that add proper bounds checking and input validation before array access operations.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-54637 — 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-2025-54637 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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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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