Vulnerability in i2c: imx Package - Reference Leak when pm_runtime_get_sync Fails

Kernel Updated 02 Oct 2025

Summary

31/05/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000243: i2c: imx: fix reference leak when pm_runtime_get_sync fails. Affects Kernel versions >= 3a5ee18d2a32bda6b9a1260136f6805848e3839d, < ff406f6cd09c273337ab4854292e4aca48f8affd. No fix is published. How to fix ↓

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Background

The i2c: imx package is a component of the Linux Kernel, which is responsible for handling communication between devices using the I2C bus. It provides the necessary drivers and functionality for I2C communication on i.MX processors. The package is widely used in various embedded systems and devices that rely on I2C communication for inter-device communication and control.

Vulnerability Detail

The identified vulnerability in the i2c: imx package occurs when the pm_runtime_get_sync function fails to acquire a reference. This leads to a reference leak, which can result in resource exhaustion and potential denial-of-service attacks. An attacker could exploit this vulnerability by repeatedly triggering the failure of pm_runtime_get_sync, causing the system to exhaust its resources and become unresponsive. The vulnerability was introduced in version v5.7 of the Linux Kernel and was fixed in version v5.12.4.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

There is no specific workaround mentioned for this vulnerability. It is advised to apply the fix by updating the Linux Kernel to the recommended version.

Conclusion

The i2c: imx package in the Linux Kernel is vulnerable to a reference leak issue when pm_runtime_get_sync fails. This vulnerability can lead to resource exhaustion and potential denial-of-service attacks. It is crucial to update the Linux Kernel to version v5.12.4 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.

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