LiveActive security incident?Get immediate response
CVE Record

CVE-2021-47151: interconnect: qcom: bcm-voter: add a missing of_node_put()

In the Linux kernel, the following vulnerability has been resolved: interconnect: qcom: bcm-voter: add a missing of_node_put() Add a missing of_node_put() in of_bcm_voter_get() to avoid the reference leak.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel resource-management bug in Qualcomm interconnect support. The fix releases a device-tree reference that was previously leaked. The source bundle does not provide CVSS, impact detail, or evidence of exploitation, so urgency should be driven by affected kernel inventory and vendor guidance.

Executive priority

Handle through normal kernel maintenance unless your environment includes exposed Qualcomm-based Linux devices without timely vendor updates. There is no supplied evidence supporting emergency response, but unsupported embedded kernels may carry longer-term operational risk.

Technical view

The kernel fix adds a missing of_node_put() in of_bcm_voter_get(), correcting a device-tree node reference leak in the qcom bcm-voter interconnect code. The supplied sources do not describe a privilege boundary impact, crash condition, or externally reachable attack surface.

Likely exposure

Exposure appears limited to Linux kernels using the Qualcomm interconnect bcm-voter path in affected kernel versions or commits. General server fleets without this hardware or driver path are less likely exposed. Distro and embedded builds need vendor-specific backport mapping.

Exploitation context

The bundle says this CVE is not in KEV and provides no cited evidence of active exploitation or public weaponization. It describes a resolved kernel reference leak, not an exploit scenario. Treat exploitability as unproven from the supplied evidence.

Researcher notes

The available record is sparse: no CVSS, CWE, detailed impact, or trigger conditions are provided. Analysis should stay anchored to the upstream fix: a missing of_node_put() causing a reference leak in Qualcomm bcm-voter interconnect code.

Mitigation direction

  • Check vendor or distro kernel advisories for CVE-2021-47151 status.
  • Update affected Linux kernels to builds containing the referenced stable fixes.
  • Prioritize Qualcomm-based embedded, mobile, or appliance kernels for review.
  • Track vendor backports instead of relying only on upstream version numbers.

Validation and detection

  • Inventory Linux kernel versions and build sources across Qualcomm-based systems.
  • Map deployed kernels to vendor advisories or the linked stable commits.
  • Confirm whether qcom bcm-voter interconnect support is present in relevant builds.
  • Document systems where vendor status is unavailable or evidence is incomplete.
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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2021-47151 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
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
3Timeline events
2ADP providers
4Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux976daac4a1c581e5d5fd64047519fd6fcde39738, 976daac4a1c581e5d5fd64047519fd6fcde39738, 976daac4a1c581e5d5fd64047519fd6fcde39738unaffected
LinuxLinux5.7, 0, 5.10.42, 5.12.9, 5.13affected
Weakness

CWE details

No CWE listed

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