Vulnerability in Kernel: arm64: compat: Do not treat syscall number as ESR_ELx for a bad syscall

Kernel Updated 02 Oct 2025

Summary

28/06/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1003385: arm64: compat: Do not treat syscall number as ESR_ELx for a bad syscall. Affects Kernel versions < 621916afe8cd4f322eb12759b64a2f938d4e551d. No fix is published. How to fix ↓

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Background

The Kernel is a critical component of the Linux operating system that provides core functionalities and acts as an interface between hardware and software. It manages system resources, facilitates communication between processes, and handles various system operations. The arm64 architecture is specifically designed for 64-bit ARM processors. In the context of this vulnerability, the compatibility layer of the arm64 architecture mishandles the syscall number, treating it as ESR_ELx for a bad syscall.

Vulnerability Detail

The vulnerability arises from the incorrect treatment of the syscall number as ESR_ELx for a bad syscall in the arm64 compatibility layer. This can lead to potential security risks, although the actual impact and attack plausibility have not been proven yet. Attackers may exploit this vulnerability to execute arbitrary code, escalate privileges, or cause denial-of-service conditions. The vulnerability affects the Linux Kernel and can be mitigated by applying the fix provided in the Linux Kernel version v5.15.46.

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 v5.15.46 or later. This update includes the necessary patch to address the issue. Follow the official documentation and guidelines provided by the Linux Kernel community to ensure a successful update.

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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 vulnerability in the Kernel's arm64 compatibility layer can potentially lead to security risks. It is crucial to update the Linux Kernel to version v5.15.46 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, you can reach out to DevNack.com.

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