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CVE Record

CVE-2023-54109: media: rcar_fdp1: Fix refcount leak in probe and remove function

In the Linux kernel, the following vulnerability has been resolved: media: rcar_fdp1: Fix refcount leak in probe and remove function rcar_fcp_get() take reference, which should be balanced with rcar_fcp_put(). Add missing rcar_fcp_put() in fdp1_remove and the error paths of fdp1_probe() to fix this. [hverkuil: resolve merge conflict, remove() is now void]

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue is a resource-management bug in the rcar_fdp1 media driver. The public record describes a missing reference release during driver setup failure and removal. No CVSS score, CWE, or active exploitation evidence is provided, so business urgency depends on whether affected kernels and this driver are present.

Executive priority

Treat this as a targeted kernel maintenance item, not an emergency, unless your estate includes affected Linux kernels using the rcar_fdp1 media driver. Patch through normal kernel update channels and confirm scope before escalating.

Technical view

The bug is a reference-count leak: rcar_fcp_get() takes a reference that should be released with rcar_fcp_put(). The fix adds missing rcar_fcp_put() calls in fdp1_remove() and fdp1_probe() error paths across Linux stable branches.

Likely exposure

Exposure appears limited to Linux systems running affected kernel versions where the rcar_fdp1 media driver is built, loaded, or exercised. The source bundle does not identify broader products, distributions, or reachable attack surfaces.

Exploitation context

The CVE record does not report exploitation, and KEV status is false. The public description does not provide a trigger path beyond driver probe and remove handling, so exploitability and impact are not established from the provided sources.

Researcher notes

Evidence is sparse: no CVSS, CWE, exploit report, or detailed impact statement is supplied. Analysis should stay close to the patch: an unbalanced reference acquired by rcar_fcp_get() in probe/remove paths of the rcar_fdp1 media driver.

Mitigation direction

  • Identify systems running affected Linux kernel versions listed in the CVE record.
  • Check whether the rcar_fdp1 media driver is enabled or loaded.
  • Apply vendor or distribution kernel updates containing the referenced stable fixes.
  • For unmanaged kernels, review the listed upstream stable commits before backporting.
  • Prioritize embedded or media systems more than generic servers if the driver is absent.

Validation and detection

  • Confirm deployed kernel versions against the affected and fixed ranges.
  • Inventory kernel configuration and loaded modules for rcar_fdp1.
  • Verify the relevant stable fix commit is present in patched kernel sources.
  • Check vendor advisories for distribution-specific package names and fixed builds.
  • Document systems where the driver is not present as lower exposure.
Prepared
Confidence
medium
Sources
10

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-2023-54109 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
3Timeline events
0ADP providers
9Source links

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.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux4710b752e029f3f82dd4a84d9dc61fe72c97bf82, 4710b752e029f3f82dd4a84d9dc61fe72c97bf82, 4710b752e029f3f82dd4a84d9dc61fe72c97bf82, 4710b752e029f3f82dd4a84d9dc61fe72c97bf82, 4710b752e029f3f82dd4a84d9dc61fe72c97bf82, 4710b752e029f3f82dd4a84d9dc61fe72c97bf82, 4710b752e029f3f82dd4a84d9dc61fe72c97bf82, 4710b752e029f3f82dd4a84d9dc61fe72c97bf82unaffected
LinuxLinux4.10, 0, 4.19.283, 5.4.243, 5.10.180, 5.15.111, 6.1.28, 6.2.15, 6.3.2, 6.4affected
Weakness

CWE details

No CWE listed

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