BH1780 IIO Light Sensor PM Runtime Leak Fix

Publication date: 2026-05-08

Last updated on: 2026-07-04

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: iio: light: bh1780: fix PM runtime leak on error path Move pm_runtime_put_autosuspend() before the error check to ensure the PM runtime reference count is always decremented after pm_runtime_get_sync(), regardless of whether the read operation succeeds or fails.

CVSS Scores

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Meta Information

Published

2026-05-08

Last Modified

2026-07-04

Generated

2026-07-09

AI Q&A

2026-05-08

EPSS Evaluated

2026-07-08

NVD

CVE-2026-43355

EUVD

EUVD-2026-28661

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is related to the Linux kernel's iio light sensor driver for the bh1780 device. It involves a power management runtime (PM runtime) reference count leak on an error path. Specifically, the function pm_runtime_put_autosuspend() was not called before an error check, which could cause the PM runtime reference count to not be decremented properly after pm_runtime_get_sync() is called. This means that even if a read operation fails, the reference count might remain incremented, leading to a resource leak.

Impact Analysis

The impact of this vulnerability is a power management runtime reference count leak in the Linux kernel's light sensor driver. This leak can cause the system to hold on to power management resources longer than necessary, potentially leading to increased power consumption or reduced battery life on affected devices. It may also affect system stability if resource leaks accumulate over time.

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