Vulnerability in arch/arm64 Package: Fix topology initialization for core scheduling
Summary
GSD-2022-1001362: arch/arm64: Fix topology initialization for core scheduling. Affects Kernel versions >= 9edeaea1bc452372718837ed2ba775811baf1ba1, < 790c1567582bda8f1153015436e3330a7c6eb278. No fix is published. How to fix ↓
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Background
The arch/arm64 package is a component of the Linux Kernel, which is responsible for supporting the ARMv8-A architecture. It provides the necessary functionality for running Linux on ARM-based devices. The package includes various modules and drivers specific to the ARM64 architecture. One of the critical aspects of the arch/arm64 package is the topology initialization, which determines the structure and relationships between CPU cores. This information is crucial for efficient core scheduling and resource allocation. However, a vulnerability has been discovered in the topology initialization process, which can lead to potential security risks.
Vulnerability Detail
The vulnerability in the arch/arm64 package affects the topology initialization for core scheduling. It was introduced in version v5.14 of the Linux Kernel by commit 9edeaea1bc452372718837ed2ba775811baf1ba1 and is fixed in version v5.16.20 by commit 790c1567582bda8f1153015436e3330a7c6eb278. The issue arises during the initialization process, where the topology information may not be correctly set, leading to incorrect core scheduling decisions. This vulnerability can potentially be exploited by attackers to gain unauthorized access or disrupt the system's performance. It is important to note that the impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
In conclusion, the arch/arm64 package in the Linux Kernel is vulnerable to a topology initialization issue that can impact core scheduling and resource allocation. This vulnerability can potentially be exploited by attackers. It is recommended to update the Linux Kernel to version v5.16.20 or later to mitigate this issue. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The arch/arm64 package is a component of the Linux Kernel that provides support for the ARMv8-A architecture.
Topology initialization in the arch/arm64 package determines the structure and relationships between CPU cores, which is essential for efficient core scheduling and resource allocation.
This vulnerability can potentially be exploited by attackers to gain unauthorized access or disrupt the system's performance.
No, the impact and attack plausibility of this vulnerability have not been proven yet.
To fix this vulnerability, update the Linux Kernel to version v5.16.20 or later by pulling the latest changes from the official Linux Kernel repository.
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