Memory Leak Vulnerability in ACPI: scan

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-2021-1000405: ACPI: scan: Fix a memory leak in an error handling path. Affects Kernel versions >= bc0b1a2036dd8072106ec81a8685ecb901f72ed6, < dafd4c0b5e835db020cff11c74b4af9493a58e72. No fix is published. How to fix ↓

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Background

ACPI (Advanced Configuration and Power Interface) is a standard for power management and configuration of computer hardware. The ACPI scan function is responsible for detecting and initializing ACPI devices. This vulnerability in the ACPI scan function can lead to a memory leak in certain error handling scenarios.

Vulnerability Detail

The vulnerability occurs in the error handling path of the ACPI scan function. When an error is encountered during device initialization, memory allocated for the device is not properly freed, resulting in a memory leak. An attacker could potentially exploit this vulnerability to exhaust system memory resources, leading to a denial of service condition or other adverse effects.

How To Fix

No fixed version is published for this vulnerability.

To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.4.120 or later. The fix for this vulnerability was implemented in commit dafd4c0b5e835db020cff11c74b4af9493a58e72. Updating to the fixed version will ensure that the memory leak issue in the ACPI scan function is resolved.

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Workaround

There is no specific workaround provided for this vulnerability. It is recommended to update to the fixed version of the Linux Kernel as mentioned in the 'how_to_fix' section.

Conclusion

The memory leak vulnerability in the ACPI scan function can be mitigated by updating the Linux Kernel to the fixed version. It is recommended to apply the necessary updates to ensure the security and stability of the system. For further support on vulnerability remediation, please contact DevNack.com.

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