CVE-2023-54205

Kernel reference leak via unreleased IRQ parent

Published Dec 30, 2025 · Updated Dec 30, 2025

Resource leak in the STM32 pinctrl driver in Linux allows attackers to leak device-tree node references via unspecified vectors. The stm32_pctrl_get_irq_domain function calls of_irq_find_parent, which increments the returned node's reference count, without a matching of_node_put after lookup. Published records do not identify an attacker-controlled trigger or establish that the leak can exhaust memory or interrupt service.

CVSS severityUnavailable
Unscored
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in the STM32 pinctrl driver in Linux allows attackers to leak device-tree node references via unspecified vectors. The stm32_pctrl_get_irq_domain function calls of_irq_find_parent, which increments the returned node's reference count, without a matching of_node_put after lookup. Published records do not identify an attacker-controlled trigger or establish that the leak can exhaust memory or interrupt service.

The record

CVE
CVE-2023-54205
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 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=5.2
  2. Affected versionversion=d86f4d71e42a9fa1866f030074e54d7571d16ec1 <601be03fa8b81747a154bdef9b559411a5b921e8
  3. Affected versionversion=d86f4d71e42a9fa1866f030074e54d7571d16ec1 <8ab860dd8717a7e4a143988885fea0d7e5a9412e
  4. Affected versionversion=d86f4d71e42a9fa1866f030074e54d7571d16ec1 <95ab6d7905ebb52dc2ed6357c38e536753824068
  5. Affected versionversion=d86f4d71e42a9fa1866f030074e54d7571d16ec1 <9ae053d1eb87875d56f95b6a123a69827225a70e
  6. Affected versionversion=d86f4d71e42a9fa1866f030074e54d7571d16ec1 <af54707c0ccab52b3d532402436ea101011a9299
  7. Affected versionversion=d86f4d71e42a9fa1866f030074e54d7571d16ec1 <dcef18c8ac40aa85bb339f64c1dd31dd458b06fb

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=5.2; version=d86f4d71e42a9fa1866f030074e54d7571d16ec1 <601be03fa8b81747a154bdef9b559411a5b921e8; version=d86f4d71e42a9fa1866f030074e54d7571d16ec1 <8ab860dd8717a7e4a143988885fea0d7e5a9412e; version=d86f4d71e42a9fa1866f030074e54d7571d16ec1 <95ab6d7905ebb52dc2ed6357c38e536753824068; version=d86f4d71e42a9fa1866f030074e54d7571d16ec1 <9ae053d1eb87875d56f95b6a123a69827225a70e; version=d86f4d71e42a9fa1866f030074e54d7571d16ec1 <af54707c0ccab52b3d532402436ea101011a9299; version=d86f4d71e42a9fa1866f030074e54d7571d16ec1 <dcef18c8ac40aa85bb339f64c1dd31dd458b06fb

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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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