CVE-2024-56434
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 · uneditedUAF vulnerability in the device node access module Impact: Successful exploitation of this vulnerability may cause service exceptions of the device.
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 a Use-After-Free (UAF) memory corruption vulnerability in the device node access module. UAF vulnerabilities occur when memory is freed but continue to be accessed, potentially allowing attackers to manipulate memory contents and cause service exceptions or potentially achieve code execution. The vulnerability affects device node handling functionality.
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= 14.0.0= 4.0.0= 4.2.0CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 checksWork through these to decide whether this CVE applies to you.
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Identify the operating system typeCheck if the device runs Huawei EMUI or HarmonyOS by looking at system settings under 'About Phone' or using 'getprop ro.build.version.emui' or 'getprop ro.build.version.huawei' in ADB/shellAffected if The device is not running EMUI 14.0.0 or HarmonyOS 4.0.0/4.2.0
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Check the installed EMUI versionNavigate to Settings > About Phone > Version or use 'getprop ro.build.version.emui' via ADB shell to retrieve the exact EMUI version numberAffected if The EMUI version equals exactly 14.0.0
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Check the installed HarmonyOS versionNavigate to Settings > About Phone > Version or use 'getprop ro.build.version.huawei' via ADB shell to retrieve the exact HarmonyOS version numberAffected if The HarmonyOS version equals exactly 4.0.0 or exactly 4.2.0
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Verify device node access module is in useCheck for active device node access by examining running processes with 'ps -A | grep -i node' or checking /dev/ for device node files being accessed by applicationsAffected if The device node access module is actively being used on an affected OS version
The environment is affected only if the device runs exactly EMUI 14.0.0 or HarmonyOS 4.0.0/4.2.0 AND the device node access module is in use
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-provided patches for the device node access module; if no patch is available, consider compensating controls such as restricting access to vulnerable device nodes or implementing monitoring for exploitation attempts.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 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 $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-56434 — 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-2024-56434 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
- No weaponised exploit code, or anything meant to cause harm
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