CVE-2023-54009
Unknown Unknown - Not Provided

Runtime PM Reference Leak in Linux cdns_i2c_master_xfer Function

Publication date: 2025-12-24

Last updated on: 2025-12-24

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: i2c: cadence: cdns_i2c_master_xfer(): Fix runtime PM leak on error path The cdns_i2c_master_xfer() function gets a runtime PM reference when the function is entered. This reference is released when the function is exited. There is currently one error path where the function exits directly, which leads to a leak of the runtime PM reference. Make sure that this error path also releases the runtime PM reference.

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Meta Information

Published
2025-12-24
Last Modified
2025-12-24
Generated
2026-07-06
AI Q&A
2025-12-24
EPSS Evaluated
2026-07-05
NVD
CVE-2023-54009
EUVD
EUVD-2025-205161

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
cadence cdns_i2c_master *

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is a runtime power management (PM) reference leak in the Linux kernel's cdns_i2c_master_xfer() function. When the function is called, it acquires a runtime PM reference, which should be released upon function exit. However, there is an error path where the function exits without releasing this reference, causing a leak.

Impact Analysis

The impact of this vulnerability is a leak of runtime PM references, which could lead to improper power management behavior such as preventing devices from entering low-power states, potentially causing increased power consumption or resource exhaustion.

Mitigation Strategies

Apply the patch or update to a Linux kernel version where the cdns_i2c_master_xfer() function has been fixed to properly release the runtime PM reference on all error paths, preventing the runtime PM leak.

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