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CVE Record

CVE-2021-47181: usb: musb: tusb6010: check return value after calling platform_get_resource()

In the Linux kernel, the following vulnerability has been resolved: usb: musb: tusb6010: check return value after calling platform_get_resource() It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-47181 is a Linux kernel bug in the TUSB6010 USB MUSB driver. If the driver cannot retrieve an expected platform resource, it may dereference a null pointer and crash. The available sources do not provide CVSS scoring or evidence of active exploitation.

Executive priority

Treat this as a targeted Linux kernel availability issue. Prioritize remediation where affected USB hardware or custom kernels exist; otherwise track through normal kernel patch management because exploitation evidence and severity scoring are incomplete.

Technical view

The fix adds a return-value check after platform_get_resource() in usb/musb/tusb6010 logic. Without that check, a NULL resource pointer can be used, causing a kernel null-pointer dereference. The issue is documented as resolved across multiple Linux stable commits.

Likely exposure

Exposure is most likely on Linux systems running affected kernel versions where the TUSB6010 MUSB USB controller driver is present and reachable. General Linux fleets may have low practical exposure if this hardware or driver is not used.

Exploitation context

The source bundle marks KEV as false and cites no public active exploitation. The documented consequence is a null-pointer dereference, which primarily indicates a kernel crash or denial-of-service risk rather than confirmed privilege escalation.

Researcher notes

Evidence is limited to the CVE record and Linux stable fix references. The core bug is missing NULL handling after platform_get_resource(). Do not assume broader USB stack impact, active exploitation, or privilege escalation without additional vendor or upstream evidence.

Mitigation direction

  • Update to a vendor-supported kernel containing the referenced stable fixes.
  • Check distribution advisories for the exact fixed package for your kernel branch.
  • Prioritize systems using the TUSB6010 MUSB USB controller driver.
  • Retire or rebuild custom kernels that lack the referenced fix.
  • Avoid direct wrangler or deployment assumptions; follow vendor kernel guidance.

Validation and detection

  • Inventory kernel versions across affected Linux assets.
  • Confirm whether the TUSB6010 MUSB driver is built, loaded, or required.
  • Map installed kernels to vendor advisories or referenced stable commits.
  • Review crash logs for relevant USB MUSB null-pointer dereference events.
  • Regression-test USB initialization after applying kernel updates.
Prepared
Confidence
medium
Sources
10

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-2021-47181 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
3Timeline events
2ADP providers
9Source 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
LinuxLinux550a7375fe720924241f0eb76e4a5c1a3eb8c32f, 550a7375fe720924241f0eb76e4a5c1a3eb8c32f, 550a7375fe720924241f0eb76e4a5c1a3eb8c32f, 550a7375fe720924241f0eb76e4a5c1a3eb8c32f, 550a7375fe720924241f0eb76e4a5c1a3eb8c32f, 550a7375fe720924241f0eb76e4a5c1a3eb8c32f, 550a7375fe720924241f0eb76e4a5c1a3eb8c32f, 550a7375fe720924241f0eb76e4a5c1a3eb8c32funaffected
LinuxLinux2.6.27, 0, 4.4.293, 4.9.291, 4.14.256, 4.19.218, 5.4.162, 5.10.82, 5.15.5, 5.16affected
Weakness

CWE details

No CWE listed

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