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CVE Record

CVE-2022-49386: net: ethernet: ti: am65-cpsw-nuss: Fix some refcount leaks

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: ti: am65-cpsw-nuss: Fix some refcount leaks of_get_child_by_name() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. am65_cpsw_init_cpts() and am65_cpsw_nuss_probe() don't release the refcount in error case. 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 reliability flaw in a Texas Instruments Ethernet driver path. A missed reference release can leak kernel object references during error handling, potentially degrading availability. It is not described as a data theft or remote code execution issue in the supplied sources.

Executive priority

Treat as a moderate availability issue. Prioritize patching where affected Linux kernels run network-reliant embedded or operational devices, but do not treat it as internet-wide remote compromise based on the supplied evidence.

Technical view

CVE-2022-49386 fixes missing of_node_put() calls after of_get_child_by_name() in am65_cpsw_init_cpts() and am65_cpsw_nuss_probe(). The CVSS vector is local, low-privilege, no user interaction, with high availability impact and no confidentiality or integrity impact.

Likely exposure

Exposure is most likely on Linux systems using kernels that include the TI AM65 CPSW NUSS Ethernet driver and lack the referenced stable fixes. General-purpose systems not using this driver path may have little practical exposure.

Exploitation context

The source bundle does not identify active exploitation, and KEV status is false. The CVSS vector indicates local access with low privileges would be required. No public exploit behavior is provided in the supplied sources.

Researcher notes

The issue is a reference count leak in error paths, not a described memory corruption primitive. The public record provides fix commits and CVSS metadata but no CWE, exploit details, or distribution-specific affected package mapping.

Mitigation direction

  • Update affected Linux kernels to versions containing the referenced stable commits.
  • Prioritize embedded or appliance images using TI AM65 CPSW NUSS networking.
  • Check vendor kernel advisories for backported fixes in supported distributions.
  • Avoid inventing local workarounds; follow kernel or device vendor guidance.

Validation and detection

  • Inventory deployed kernel versions and vendor patch levels.
  • Confirm whether the am65-cpsw-nuss driver is present or built into device images.
  • Map kernels against the CVE record and referenced stable commits.
  • Review device vendor advisories for fixed firmware or kernel releases.
Prepared
Confidence
high
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

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CVE-2022-49386 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-2022-49386Attack 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
LinuxLinux93a76530316a3d8cc2d82c3deca48424fee92100, 93a76530316a3d8cc2d82c3deca48424fee92100, 93a76530316a3d8cc2d82c3deca48424fee92100, 93a76530316a3d8cc2d82c3deca48424fee92100, 93a76530316a3d8cc2d82c3deca48424fee92100unaffected
LinuxLinux5.7, 0, 5.10.122, 5.15.47, 5.17.15, 5.18.4, 5.19affected
Weakness

CWE details

No CWE listed

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