CVE-2024-27371
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 in Samsung Mobile Processor Exynos 980, Exynos 850, Exynos 1280, Exynos 1380, and Exynos 1330. In the function slsi_nan_followup_get_nl_params(), there is no input validation check on hal_req->service_specific_info_len coming from userspace, which can lead to a heap overwrite.
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 · high confidenceMissing input validation in the slsi_nan_followup_get_nl_params() kernel function allows userspace to supply an arbitrary value for service_specific_info_len without bounds checking, leading to heap buffer overflow and memory corruption.
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 dataall versionsall versionsall versionsall versionsall versionsCVSS 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
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/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 checksWork through these to decide whether this CVE applies to you.
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Identify the Exynos chipset modelCheck the device or system information to determine if the chipset is one of: Exynos 980, Exynos 850, Exynos 1280, Exynos 1380, or Exynos 1330. This can be done via /proc/cpuinfo, kernel logs, or device specifications.Affected if The chipset is any of the five affected Exynos models listed in the CVE.
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Determine if NAN (Neighbor Awareness Networking) feature is enabledCheck if the device uses NAN functionality. This may be visible in kernel configuration (CONFIG_NAN), network interface listings, or active wireless services related to neighbor discovery.Affected if NAN is enabled and actively being used on the device.
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Verify the firmware or kernel versionRetrieve the firmware version for the wireless or network subsystem. On Android devices, check /vendor/firmware or use commands like 'getprop' for radio versions. On Linux-based systems, check /lib/firmware or kernel version via 'uname -a'.Affected if The firmware or kernel version corresponds to the affected Exynos chipsets without the Samsung vendor patch applied.
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Inspect kernel logs for NAN-related operationsReview kernel logs (dmesg, logcat) for calls to 'slsi_nan_followup_get_nl_params' or NAN protocol activity that may indicate the vulnerable code path is being exercised.Affected if The device is actively processing NAN follow-up messages and the vendor patch for input validation is absent.
A device is affected if it uses any of the listed Exynos chipsets (980, 850, 1280, 1380, 1330) and has the NAN feature enabled, as all firmware versions of these chipsets lack the bounds-checking patch for the service_specific_info_len parameter.
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 Samsung's vendor firmware/patch for affected Exynos processors to add validation of service_specific_info_len before use in memory copy operations.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-27371 — 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-2024-27371 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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