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CVE Record

CVE-2018-5834: In __wlan_hdd_cfg80211_vendor_scan(), a buffer overwrite can potentially occur in Android releases from CAF...

In __wlan_hdd_cfg80211_vendor_scan(), a buffer overwrite can potentially occur in Android releases from CAF using the linux kernel (Android for MSM, Firefox OS for MSM, QRD Android) before security patch level 2018-06-05.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2018-5834 is a buffer overwrite in Qualcomm CAF Android WLAN kernel code. It affects specified CAF-based Android/MSM releases before the 2018-06-05 security patch level. Business risk is mainly legacy or custom Qualcomm-based mobile builds that still carry unpatched CAF WLAN code.

Executive priority

Prioritize this where legacy Qualcomm-based Android devices remain operational, especially managed fleets or embedded deployments. The missing severity and exploit data limit urgency scoring, but kernel WLAN memory corruption in unsupported mobile firmware deserves remediation planning.

Technical view

The issue is in __wlan_hdd_cfg80211_vendor_scan(), part of Qualcomm open-source WLAN driver code. The public record describes a potential buffer overwrite in Android releases from CAF using the Linux kernel. No CVSS vector, CWE, detailed impact, or exploit prerequisites are provided in the supplied sources.

Likely exposure

Most likely exposure is older Qualcomm/CAF-derived Android device firmware, custom ROMs, embedded Android builds, or maintained downstream forks that predate the 2018-06-05 patch level and include the affected WLAN stack.

Exploitation context

The provided bundle does not show CISA KEV listing, active exploitation, proof-of-concept publication, or exploitation conditions. Treat exploitation status as unconfirmed, not absent.

Researcher notes

Evidence is sparse: the CVE description, Android bulletin, CodeAurora bulletin, and referenced commit identify the vulnerable function and affected CAF release family. They do not provide a CVSS score, exploitability narrative, or a named workaround beyond patch-level/vendor fix tracking.

Mitigation direction

  • Update affected builds to the 2018-06-05 Android security patch level or later.
  • Review Qualcomm CAF and OEM advisories for the exact WLAN driver fix.
  • Backport the referenced qcacld-3.0 fix if maintaining a downstream CAF fork.
  • Retire or isolate devices that cannot receive vendor firmware updates.

Validation and detection

  • Inventory Qualcomm-based Android, MSM, Firefox OS for MSM, and QRD Android assets.
  • Check device security patch level against 2018-06-05.
  • For custom kernels, verify the referenced WLAN driver commit or equivalent patch is present.
  • Confirm OEM firmware release notes include the relevant Qualcomm component update.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2018-5834 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Qualcomm, Inc.Android for MSM, Firefox OS for MSM, QRD AndroidAll Android releases from CAF using the Linux kernelListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.