CVE-2023-54109

Reference leak via unbalanced FCP acquisition

Published Dec 24, 2025 · Updated Dec 24, 2025

Reference-count leak in the rcar_fdp1 driver in Linux allows attackers to cause unspecified impact through device probe or removal paths. The probe error paths and fdp1_remove retain references acquired by rcar_fcp_get() because they omit the balancing rcar_fcp_put(). Exposure requires the Renesas R-Car FDP1 device path; published sources identify no demonstrated consequence beyond the leaked reference.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reference-count leak in the rcar_fdp1 driver in Linux allows attackers to cause unspecified impact through device probe or removal paths. The probe error paths and fdp1_remove retain references acquired by rcar_fcp_get() because they omit the balancing rcar_fcp_put(). Exposure requires the Renesas R-Car FDP1 device path; published sources identify no demonstrated consequence beyond the leaked reference.

The record

CVE
CVE-2023-54109
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.10
  2. Affected versionversion=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <1acb982e3616e70128994fdecf2368a259c8a489
  3. Affected versionversion=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <2322b262d2205720518785c2706a3283725ba402
  4. Affected versionversion=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <418a8f3140e07f33bbd5a81625d0ef46c0732cef
  5. Affected versionversion=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <45b7461d914c867ef21c74798da8c42d13d3a0df
  6. Affected versionversion=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <48765ca7c6b71bf73a4cc8475a4bad9e2633cf61
  7. Affected versionversion=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <59c6addfaaaa09ff7654e4d8793cb16fd22a46d4
  8. Affected versionversion=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <9df630dafa1a59946d1da6f070d4cb64f14ea57c
  9. Affected versionversion=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <c766c90faf93897b77c9c5daa603cffab85ba907

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=4.10; version=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <1acb982e3616e70128994fdecf2368a259c8a489; version=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <2322b262d2205720518785c2706a3283725ba402; version=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <418a8f3140e07f33bbd5a81625d0ef46c0732cef; version=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <45b7461d914c867ef21c74798da8c42d13d3a0df; version=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <48765ca7c6b71bf73a4cc8475a4bad9e2633cf61; version=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <59c6addfaaaa09ff7654e4d8793cb16fd22a46d4; version=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <9df630dafa1a59946d1da6f070d4cb64f14ea57c; version=4710b752e029f3f82dd4a84d9dc61fe72c97bf82 <c766c90faf93897b77c9c5daa603cffab85ba907

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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