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CVE Record

CVE-2018-5836: In wma_nan_rsp_event_handler() in Android releases from CAF using the linux kernel (Android for MSM, Firefo...

In wma_nan_rsp_event_handler() 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, the data_len value is received from firmware and not properly validated which could potentially lead to an out-of-bounds access.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2018-5836 is a Qualcomm/CAF Android WLAN kernel issue where firmware-supplied length data was not checked correctly. On affected Android releases before the 2018-06-05 security patch level, this could cause out-of-bounds memory access. Public sources do not provide CVSS, confirmed impact, or exploitation evidence.

Executive priority

Prioritize this as legacy mobile firmware risk management, not an emergency, unless affected unsupported devices handle sensitive data. The main business issue is whether old Qualcomm Android fleets remain in use without confirmed security patch coverage.

Technical view

The flaw is in wma_nan_rsp_event_handler() in CAF Android kernels for Android for MSM, Firefox OS for MSM, and QRD Android. The handler trusted a firmware-provided data_len without adequate validation, enabling potential out-of-bounds access. The referenced Code Aurora commit is the primary technical fix evidence.

Likely exposure

Exposure is most likely on legacy Qualcomm-based Android devices or downstream firmware trees using CAF WLAN/kernel components before the 2018-06-05 Android security patch level. Modern supported devices are less likely exposed if they received the relevant vendor security updates.

Exploitation context

The provided sources do not state active exploitation, public exploit availability, attacker requirements, or achieved impact. CISA KEV status is false in the bundle. Treat exploitation context as unconfirmed rather than absent.

Researcher notes

Evidence is sparse: no CVSS, CWE, exploit details, or full impact statement are provided. The strongest technical signal is improper validation of firmware-provided data_len in a WLAN/NAN response handler, with potential out-of-bounds access before the June 2018 patch level.

Mitigation direction

  • Identify Qualcomm/CAF Android device builds below the 2018-06-05 security patch level.
  • Apply vendor or OEM firmware updates that include the Qualcomm/CAF WLAN fix.
  • For unsupported devices, plan replacement or compensating mobile device restrictions.
  • Check vendor advisories before assuming a backported fix is present.

Validation and detection

  • Inventory Android security patch levels across managed Qualcomm-based devices.
  • Confirm whether builds include the referenced CAF qcacld-3.0 commit or OEM equivalent.
  • Review OEM security bulletins for CVE-2018-5836 coverage.
  • Flag devices without vendor support for retirement planning.
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

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CVE-2018-5836 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.