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CVE Record

CVE-2022-49466: regulator: scmi: Fix refcount leak in scmi_regulator_probe

In the Linux kernel, the following vulnerability has been resolved: regulator: scmi: Fix refcount leak in scmi_regulator_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

CVE-2022-49466 is a Linux kernel resource-management bug in the SCMI regulator driver. A missing reference release can leak kernel object references. The CVSS rating is medium, but the stated impact is availability only, with local low-privilege access required.

Executive priority

Treat as a routine kernel maintenance item unless affected systems have strict availability requirements. It does not currently warrant emergency response based on the provided evidence, but it should be included in normal kernel patch cycles.

Technical view

The vulnerable path is scmi_regulator_probe. of_find_node_by_name() increments a device tree node reference count, but the code did not call of_node_put() when finished. The fix adds the missing release to prevent a refcount leak. CVSS 3.1 is 5.5: local, low complexity, low privileges, no user interaction, high availability impact.

Likely exposure

Exposure is limited to Linux systems running affected kernel versions or vendor kernels that include the vulnerable SCMI regulator code path. The source bundle lists Linux as affected and references fixes in stable kernel commits. Confirm exposure against your distribution or appliance vendor kernel, not only upstream version strings.

Exploitation context

The provided sources do not show active exploitation, and KEV is false. The CVSS vector indicates local access with low privileges is required. The known impact is availability; the sources do not claim confidentiality or integrity impact.

Researcher notes

The evidence supports a refcount leak fix only. The affected-version data in the bundle is sparse and includes upstream commit references, so product-specific exposure depends on vendor backports and configuration. No CWE is listed in the source bundle.

Mitigation direction

  • Apply Linux kernel or vendor updates that include the referenced stable fixes.
  • Confirm distribution kernels have backported the missing of_node_put() fix.
  • Prioritize systems where kernel availability is operationally critical.
  • If updates are delayed, monitor vendor guidance; no separate mitigation is named.

Validation and detection

  • Inventory Linux kernel versions and vendor kernel build identifiers.
  • Check vendor advisories or changelogs for CVE-2022-49466 coverage.
  • Verify the SCMI regulator fix is present in kernel source or package metadata.
  • Confirm vulnerability scanners distinguish upstream versions from backported vendor fixes.
Prepared
Confidence
high
Sources
6

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-2022-49466 mapping review

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

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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
5Source 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-2022-49466Attack 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
LinuxLinux0fbeae70ee7ce98e18a47337cd1f205dd88589e9, 0fbeae70ee7ce98e18a47337cd1f205dd88589e9, 0fbeae70ee7ce98e18a47337cd1f205dd88589e9, 0fbeae70ee7ce98e18a47337cd1f205dd88589e9unaffected
LinuxLinux5.11, 0, 5.15.46, 5.17.14, 5.18.3, 5.19affected
Weakness

CWE details

No CWE listed

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