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CVE Record

CVE-2023-53443: mfd: arizona: Use pm_runtime_resume_and_get() to prevent refcnt leak

In the Linux kernel, the following vulnerability has been resolved: mfd: arizona: Use pm_runtime_resume_and_get() to prevent refcnt leak In arizona_clk32k_enable(), we should use pm_runtime_resume_and_get() as pm_runtime_get_sync() will increase the refcnt even when it returns an error.

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue can cause an availability problem when a local user reaches the affected arizona MFD driver path. The bug is a runtime power-management reference count leak on error, not a data theft or privilege escalation issue based on the supplied CVSS vector.

Executive priority

Treat as a moderate Linux availability risk. It does not appear remotely exploitable from the supplied evidence, but exposed systems should receive normal kernel maintenance, especially where the affected driver is in use.

Technical view

In arizona_clk32k_enable(), pm_runtime_get_sync() increments the runtime PM reference count even when it returns an error. The resolved change uses pm_runtime_resume_and_get() to avoid leaking the reference count. The CVSS vector is local, low complexity, low privileges, no user interaction, availability high.

Likely exposure

Exposure is most likely on Linux systems running affected kernel versions with the arizona MFD driver code present and reachable. The bundle lists Linux as affected across several kernel release ranges, but does not identify specific distributions or hardware products.

Exploitation context

The source bundle does not report active exploitation, and KEV status is false. The CVSS vector requires local access with low privileges and has no confidentiality or integrity impact, but could affect system availability.

Researcher notes

The evidence is limited to the CVE record and Linux stable commit references. No CWE, exploit detail, affected distributions, or product-specific advisories are provided in the bundle, so validation should focus on kernel lineage and backport status.

Mitigation direction

  • Apply vendor kernel updates that include the referenced Linux stable fixes.
  • Confirm downstream distribution kernels have backported the arizona runtime PM fix.
  • Prioritize systems where the arizona MFD driver is enabled or loaded.
  • If no vendor update is available, track vendor guidance for compensating controls.

Validation and detection

  • Inventory kernel versions against the affected ranges in the CVE record.
  • Check whether the arizona MFD driver is configured, built, or loaded.
  • Verify the kernel includes one of the referenced stable commits or an equivalent backport.
  • Review vendor advisories for distribution-specific package names and fixed builds.
Prepared
Confidence
medium
Sources
8

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-2023-53443 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
7Source 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-2023-53443Attack 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
LinuxLinux247fa1920deeb1064e36c0a34410f4d63503b3d4, 247fa1920deeb1064e36c0a34410f4d63503b3d4, 247fa1920deeb1064e36c0a34410f4d63503b3d4, 247fa1920deeb1064e36c0a34410f4d63503b3d4, 247fa1920deeb1064e36c0a34410f4d63503b3d4, 247fa1920deeb1064e36c0a34410f4d63503b3d4unaffected
LinuxLinux3.10, 0, 5.4.235, 5.10.173, 5.15.100, 6.1.18, 6.2.5, 6.3affected
Weakness

CWE details

No CWE listed

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