Vulnerability in Kernel package: efi/x86: use naked RET on mixed mode call wrapper

Kernel Updated 02 Oct 2025

Summary

31/07/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1004551: efi/x86: use naked RET on mixed mode call wrapper. Affects Kernel versions >= c9eb5dcdc8f4a848b45b97725f5a2b8d324bb31a, < 5779e2f0cc241d76ae309e2f6f52168204e93fdb. No fix is published. How to fix ↓

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Background

The Kernel package is a critical component of the Linux operating system. It provides the core functionality and interfaces for the system's hardware, software, and processes. The efi/x86 module within the Kernel package specifically handles the execution of EFI (Extensible Firmware Interface) code on x86 systems. This vulnerability affects the mixed mode call wrapper in the efi/x86 module.

Vulnerability Detail

The vulnerability arises from the improper implementation of the mixed mode call wrapper in the efi/x86 module. The wrapper does not utilize the naked RET instruction, which can lead to potential security vulnerabilities. The impact and attack plausibility of this vulnerability have not been proven yet. However, if exploited, it could allow an attacker to execute arbitrary code or gain elevated privileges on the affected system. This vulnerability was introduced in version v5.10.133 of the Linux Kernel and has been fixed in version v5.10.133 by commit 5779e2f0cc241d76ae309e2f6f52168204e93fdb.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

No specific workaround has been provided for this vulnerability.

Conclusion

In conclusion, the Kernel package's efi/x86 module is vulnerable to a security issue related to the mixed mode call wrapper. It is crucial to update the Linux Kernel package to version v5.10.133 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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FAQ

What is the impact of this vulnerability?

If exploited, this vulnerability could allow an attacker to execute arbitrary code or gain elevated privileges on the affected system.

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

You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) and the Vulert Playground will provide real-time alerts for open-source vulnerabilities, including this one.