Fix lockup on kernel exec fault in Linux Kernel
Summary
GSD-2021-1001360: powerpc/mm: Fix lockup on kernel exec fault. Affects Kernel versions >= d3ca587404b36943b02df87406054ce73cc49500, < a82471a14aad90f79d1608d2bcbb019f0ffb53f0. No fix is published. How to fix ↓
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Background
The Linux Kernel is the core component of the Linux operating system. It provides essential services and functions for the system, including managing memory, processes, and device drivers. The vulnerability identified in this report affects the powerpc/mm module of the Linux Kernel. This module is responsible for managing memory in the PowerPC architecture. The vulnerability can lead to a lockup of the system when a kernel exec fault occurs.
Vulnerability Detail
The vulnerability arises from a flaw in the powerpc/mm module of the Linux Kernel. When a kernel exec fault occurs, the system can become unresponsive, resulting in a lockup. This vulnerability can be exploited by an attacker to cause a denial-of-service (DoS) condition. The impact of this vulnerability is limited to systems running the PowerPC architecture. The vulnerability was introduced in version v4.14 of the Linux Kernel and has been fixed in version v5.4.133.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The vulnerability in the powerpc/mm module of the Linux Kernel can lead to a system lockup when a kernel exec fault occurs. It is recommended to update the Linux Kernel to version v5.4.133 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a lockup of the system when a kernel exec fault occurs, resulting in a denial-of-service (DoS) condition.
This vulnerability affects systems running the PowerPC architecture.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the Vulert Playground will analyze it for open-source vulnerabilities.
Yes, this vulnerability has been fixed in version v5.4.133 of the Linux Kernel.
To update the Linux Kernel, you can obtain the latest version of the kernel source code from the official Linux Kernel repository and compile it for your system. Alternatively, you can wait for your Linux distribution to provide an updated package containing the fixed version of the kernel.
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