Vulnerability in Kernel package: s390/stack
Summary
UVI-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 Kernel package is an essential component of the Linux operating system, responsible for managing the system's core functionality. It provides various services and functions to enable communication between hardware and software components. The s390/stack module within the Kernel package is specifically designed for stack management on IBM System z architectures. It includes a stack switch helper that allows for efficient switching between different stacks. However, a vulnerability has been discovered in this module that could potentially lead to register corruption, compromising the integrity of the system.
Vulnerability Detail
The vulnerability in the s390/stack module arises from a flaw in the stack switch helper. Under certain circumstances, this helper function may corrupt registers, resulting in unpredictable behavior and potential security risks. Although the impact and attack plausibility have not been proven, the vulnerability should be addressed to ensure system stability and security. The vulnerability was introduced in version v4.20 of the Linux Kernel and has been fixed in version v5.13.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The vulnerability in the s390/stack module of the Kernel package poses a potential risk of register corruption. It is recommended to update the Linux Kernel package to version v5.13 or later to address this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven, but it has the potential to cause register corruption and compromise system integrity.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it in real-time.
No specific workaround has been provided for this vulnerability. It is recommended to update to the fixed version of the Linux Kernel package.
There are no known exploits for this vulnerability at the moment. However, it is still crucial to apply the fix to mitigate potential risks.
You can find more information about this vulnerability in the Open Source Vulnerability Database (OSVDB) entry: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1001xxx/UVI-2021-1001145.json
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