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CVE Record

CVE-2023-53268: ASoC: fsl_mqs: move of_node_put() to the correct location

In the Linux kernel, the following vulnerability has been resolved: ASoC: fsl_mqs: move of_node_put() to the correct location of_node_put() should have been done directly after mqs_priv->regmap = syscon_node_to_regmap(gpr_np); otherwise it creates a reference leak on the success path. To fix this, of_node_put() is moved to the correct location, and change all the gotos to direct returns.

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2023-53268 is a Linux kernel bug in the fsl_mqs audio driver where a device-tree reference is not released on a successful path. The published impact is denial of service only, requiring local low-privileged access. It does not indicate data theft or integrity compromise.

Executive priority

Treat as a routine but real availability patching item. It is not cited as remotely exploitable or actively exploited, but local denial-of-service risk matters for shared, embedded, or appliance-like Linux systems using this driver.

Technical view

The issue is a reference leak caused by of_node_put() being called in the wrong location after syscon_node_to_regmap(gpr_np). Linux resolved it by moving of_node_put() and replacing goto cleanup paths with direct returns. CVSS 3.1 is 5.5: local, low complexity, low privileges, no user interaction, availability impact high.

Likely exposure

Exposure appears limited to Linux kernels containing the affected fsl_mqs ASoC driver code path. Systems without that driver enabled or reachable local users are lower concern. The source bundle lists Linux kernel versions and stable commits but does not identify distributions or appliances.

Exploitation context

The source bundle does not report active exploitation, and KEV is false. The CVSS vector requires local access with low privileges. No exploit method, public weaponization, or remote attack path is cited in the provided sources.

Researcher notes

Evidence is limited to the CVE record and Linux stable commit references. The vulnerability is described as a success-path reference leak, with availability impact only. Do not assume affected distributions, exploitability beyond local low-privileged access, or specific mitigations absent vendor guidance.

Mitigation direction

  • Update to a vendor kernel containing the referenced Linux stable fixes.
  • If no package is available, ask the vendor about backport status.
  • Prioritize systems with the fsl_mqs ASoC driver enabled.
  • Reduce unnecessary local user access on affected systems.
  • Track distribution advisories for package-specific fixed versions.

Validation and detection

  • Inventory Linux kernel versions against vendor advisories and the listed stable commits.
  • Check whether the fsl_mqs ASoC driver is built or loaded.
  • Confirm the deployed kernel includes the relevant upstream fix commit.
  • Review local-user exposure on systems requiring the affected driver.
Prepared
Confidence
high
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-2023-53268 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
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-2023-53268Attack 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
LinuxLinuxa9d273671440c439c4f236123c59dd839c1a0eb7, a9d273671440c439c4f236123c59dd839c1a0eb7, a9d273671440c439c4f236123c59dd839c1a0eb7, a9d273671440c439c4f236123c59dd839c1a0eb7, a9d273671440c439c4f236123c59dd839c1a0eb7, a9d273671440c439c4f236123c59dd839c1a0eb7unaffected
LinuxLinux5.5, 0, 5.10.180, 5.15.111, 6.1.28, 6.2.15, 6.3.2, 6.4affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.