s390/stack: Fix Possible Register Corruption with Stack Switch Helper

Kernel Updated 02 Oct 2025

Summary

08/07/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1001145: s390/stack: fix possible register corruption with stack switch helper. Affects Kernel versions >= ff340d2472ec7618443913928af9fb85a7009270, < 67147e96a332b56c7206238162771d82467f86c0. No fix is published. How to fix ↓

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Background

The s390/stack package is a component of the Linux Kernel, specifically designed for the s390 architecture. It provides functionality related to stack management, including stack switching. The stack switch helper is responsible for switching between different stacks during execution. This vulnerability affects the stack switch helper in the s390/stack package.

Vulnerability Detail

The vulnerability in the s390/stack package can lead to possible register corruption when using the stack switch helper. This can have various consequences, including incorrect program execution, data corruption, or even potential security breaches. The vulnerability was introduced in version v4.20 of the Linux Kernel and is fixed in version v5.13.

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 v5.13 or later. This update includes the necessary patch to address the register corruption issue in the stack switch helper.

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Workaround

No workaround has been provided for this vulnerability.

Conclusion

The s390/stack package in the Linux Kernel is vulnerable to register corruption when using the stack switch helper. It is crucial to update the Linux Kernel to version v5.13 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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