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CVE Record

CVE-2017-15856: Due to a race condition while processing the power stats debug file to read status, a double free condition...

Due to a race condition while processing the power stats debug file to read status, a double free condition can 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

This flaw affects Qualcomm CAF-based Android kernel releases before the 2018-06-05 security patch level. A race condition while reading a power stats debug file can trigger a double free, a memory-management error that may destabilize affected devices or create security risk. The public bundle does not provide CVSS, impact, or exploitation evidence.

Executive priority

Prioritize as an asset hygiene and legacy mobile risk issue unless local evidence shows exposed vulnerable devices. The absence of CVSS and exploitation evidence prevents confident urgency ranking, but unsupported Qualcomm-based Android devices before June 2018 remain a credible concern.

Technical view

CVE-2017-15856 is a race-condition double free in Android releases from CAF using the Linux kernel, listed for Android for MSM, Firefox OS for MSM, and QRD Android. The vulnerable path is described as power stats debug file status processing. The provided sources identify fixed security patch level timing but do not define attack prerequisites or final impact.

Likely exposure

Exposure is most likely on older Qualcomm-based Android or CAF-derived firmware before Android security patch level 2018-06-05. Modern supported devices should be checked by patch level and OEM bulletin history. Non-CAF Android builds are not identified as affected in the provided bundle.

Exploitation context

The source bundle does not cite active exploitation, and CISA KEV status is false. It also does not provide exploitability details, required privileges, or whether the debug file is reachable in production configurations. Treat exploitation context as incomplete rather than confirmed benign.

Researcher notes

Key gaps are impact, exploit prerequisites, reachable attack surface, and affected branch mapping. The public description names a kernel race and double free but does not state privilege level or production exposure of the debug interface. Validate against exact CAF/OEM source lineage before assigning severity.

Mitigation direction

  • Update affected firmware to Android security patch level 2018-06-05 or later.
  • Check OEM and Qualcomm/CAF guidance for device-specific fixed builds.
  • Retire or isolate unsupported devices that cannot receive vendor security updates.
  • Track Qualcomm CAF-derived kernels in mobile, embedded, and test device inventories.

Validation and detection

  • Inventory devices running Android for MSM, Firefox OS for MSM, or QRD Android.
  • Verify each device reports security patch level 2018-06-05 or later.
  • Confirm OEM firmware notes include the relevant Qualcomm component security update.
  • Review CAF kernel provenance for products built from pre-fix source branches.
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-2017-15856 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.