PM Runtime Reference Leak in Linux Kernel fp9931 Regulator

Publication date: 2026-03-25

Last updated on: 2026-05-22

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: regulator: fp9931: Fix PM runtime reference leak in fp9931_hwmon_read() In fp9931_hwmon_read(), if regmap_read() failed, the function returned the error code without calling pm_runtime_put_autosuspend(), causing a PM reference leak.

CVSS Scores

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Meta Information

Published

2026-03-25

Last Modified

2026-05-22

Generated

2026-07-06

AI Q&A

2026-03-25

EPSS Evaluated

2026-07-05

NVD

CVE-2026-23283

EUVD

EUVD-2026-15206

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	From 6.19 (inc) to 6.19.7 (exc)
linux	linux_kernel	7.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability exists in the Linux kernel within the regulator component fp9931, specifically in the function fp9931_hwmon_read(). If the regmap_read() call fails, the function returns an error code without calling pm_runtime_put_autosuspend(), which leads to a power management (PM) runtime reference leak.

Impact Analysis

The impact of this vulnerability is a leak of PM runtime references, which can cause improper power management behavior. Over time, this may lead to increased power consumption or resource exhaustion related to power management, potentially affecting system stability or battery life.

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