Vulnerability in Kernel: mtd: rawnand: gpmi: don't leak PM reference in error path

Kernel Updated 02 Oct 2025

Summary

27/02/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1000356: mtd: rawnand: gpmi: don't leak PM reference in error path. Affects Kernel versions >= 29218853877a748a2ca41d9957a84b2d6a7f56a7, < 4cd3281a910a5adf73b2a0a82241dd67844d0b25. No fix is published. How to fix ↓

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Background

The Kernel is a critical component of the Linux operating system that manages communication between hardware and software. It provides essential functions and services to enable the proper functioning of the system. The mtd (Memory Technology Devices) subsystem within the Kernel handles flash memory devices, including NAND flash. The rawnand driver is responsible for managing NAND flash devices that use the GPMI (General-Purpose Memory Interface) controller. This vulnerability in the rawnand GPMI driver can lead to a reference leak in the power management (PM) system, potentially causing resource exhaustion or other issues.

Vulnerability Detail

The vulnerability in the rawnand GPMI driver occurs when an error path is encountered during the execution of certain operations. In this error path, a reference to the power management (PM) system is not properly released, leading to a reference leak. This can result in resource exhaustion or other unexpected behavior. An attacker may be able to exploit this vulnerability to cause a denial-of-service condition or potentially execute arbitrary code with elevated privileges. It is important to note that the impact and attack plausibility of this vulnerability have not been proven.

How To Fix

No fixed version is published for this vulnerability.

The vulnerability has been fixed in the Linux Kernel version v5.4.181 by commit 4cd3281a910a5adf73b2a0a82241dd67844d0b25. To address this vulnerability, it is recommended to update the Kernel to version v5.4.181 or later. This can be done by obtaining the updated Kernel source code from the official Git repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and compiling/installing the updated Kernel. It is important to follow the appropriate procedures for updating the Kernel in your specific environment.

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Workaround

No specific workaround has been provided for this vulnerability.

Conclusion

The vulnerability in the rawnand GPMI driver of the Kernel can lead to a reference leak in the power management system, potentially causing resource exhaustion or other issues. It is recommended to update the Kernel to version v5.4.181 or later to address this vulnerability. Regularly applying security updates and following best practices for system security is crucial. For further support on vulnerability remediation, you can contact DevNack.com.

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FAQ

What is the impact of this vulnerability?

The vulnerability can potentially lead to resource exhaustion or other unexpected behavior, which may result in a denial-of-service condition or the execution of arbitrary code with elevated privileges.

How can I check if my system is affected by this vulnerability?

You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities in the software.