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CVE Record

CVE-2022-49463: thermal/drivers/imx_sc_thermal: Fix refcount leak in imx_sc_thermal_probe

In the Linux kernel, the following vulnerability has been resolved: thermal/drivers/imx_sc_thermal: Fix refcount leak in imx_sc_thermal_probe of_find_node_by_name() returns a node pointer with refcount incremented, we should use of_node_put() on it when done. Add missing of_node_put() to avoid refcount leak.

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel resource-leak flaw in the i.MX SC thermal driver. A local, low-privileged user could potentially cause availability impact if the vulnerable code path is reachable. The source bundle does not show data theft, integrity impact, remote attack, or confirmed exploitation.

Executive priority

Treat as a moderate availability risk for affected embedded Linux platforms, not a broad emergency. Patch through normal kernel maintenance, with higher priority for production devices using i.MX thermal management.

Technical view

The probe path in thermal/drivers/imx_sc_thermal failed to release a device-tree node reference returned by of_find_node_by_name(). The kernel fix adds the missing of_node_put() call to prevent a refcount leak. CVSS is 5.5 with local access, low complexity, low privileges, and high availability impact.

Likely exposure

Exposure is most likely on Linux systems or embedded images using the imx_sc_thermal driver, especially i.MX-based platforms. Generic Linux servers without this driver or hardware path are less likely exposed, but kernel configuration and vendor backports must be checked.

Exploitation context

The CVE record marks this as non-KEV, and the supplied sources do not report active exploitation. The CVSS vector requires local access with low privileges and no user interaction. Evidence is limited to the kernel fix and CVE metadata.

Researcher notes

The public evidence describes a refcount leak fix only. The record does not provide exploit details, affected distributions, or workaround guidance. Validate exposure by driver presence, hardware platform, and vendor backport status.

Mitigation direction

  • Update to a vendor kernel containing the referenced stable fixes.
  • Check distribution or device-vendor advisories for backported kernel packages.
  • Prioritize embedded Linux images using the imx_sc_thermal driver.
  • If updates are delayed, ask the vendor for supported workaround guidance.
  • Track remediation through kernel version and patch provenance, not version strings alone.

Validation and detection

  • Inventory Linux kernels and embedded firmware images in scope.
  • Check whether imx_sc_thermal is built, loaded, or included in device kernels.
  • Compare vendor kernel patches against the referenced stable commits.
  • Confirm updated systems include the missing of_node_put() fix.
  • Document systems without the affected driver as lower exposure.
Prepared
Confidence
medium
Sources
7

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-2022-49463 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

1CVSS vectors
3Timeline events
1ADP providers
6Source links

SSVC decision data

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

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.5CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2022-49463Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

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
cvssV3_1other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxe20db70dba1c0783b9878ce37171ad560b1ebaf3, e20db70dba1c0783b9878ce37171ad560b1ebaf3, e20db70dba1c0783b9878ce37171ad560b1ebaf3, e20db70dba1c0783b9878ce37171ad560b1ebaf3, e20db70dba1c0783b9878ce37171ad560b1ebaf3unaffected
LinuxLinux5.7, 0, 5.10.121, 5.15.46, 5.17.14, 5.18.3, 5.19affected
Weakness

CWE details

No CWE listed

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