Memory Leak Vulnerability in ab8500_fg_sysfs_init

Kernel Updated 02 Oct 2025

Summary

24/04/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1002502: power: supply: ab8500: Fix memory leak in ab8500_fg_sysfs_init. Affects Kernel versions >= 8c0984e5a75337df513047ec92a6c09d78e3e5cd, < 31cdf7897dba1f096b74f69d840f0575b8cdb9ae. No fix is published. How to fix ↓

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Background

The ab8500 package is a power supply driver in the Linux Kernel. It provides support for the AB8500 PMIC (Power Management Integrated Circuit) found in various devices. The ab8500_fg_sysfs_init function is responsible for initializing the sysfs interface for the fuel gauge subsystem of the AB8500 PMIC.

Vulnerability Detail

The ab8500_fg_sysfs_init function in the ab8500 power supply driver in the Linux Kernel before v4.9.311 suffers from a memory leak. This vulnerability can be exploited by an attacker to cause a denial-of-service condition by repeatedly initializing the sysfs interface, leading to memory exhaustion. The vulnerability was introduced in version v4.9 of the Linux Kernel and was fixed in version v4.9.311.

How To Fix

No fixed version is published for this vulnerability.

To fix this vulnerability, update the Linux Kernel to version v4.9.311 or later. This can be done by pulling the latest changes from the official Linux Kernel repository: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/

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Workaround

There is no known workaround for this vulnerability. It is recommended to apply the fix by updating the Linux Kernel.

Conclusion

The memory leak vulnerability in the ab8500_fg_sysfs_init function of the ab8500 power supply driver in the Linux Kernel can lead to a denial-of-service condition. It is recommended to update the Linux Kernel to version v4.9.311 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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