Fix crashes when toggling entry flush barrier in powerpc/64s
Summary
GSD-2021-1000205: powerpc/64s: Fix crashes when toggling entry flush barrier. Affects Kernel versions >= f79643787e0a0762d2409b7b8334e83f22d85695, < 5bc00fdda1e934c557351a9c751a205293e68cbf. No fix is published. How to fix ↓
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Background
The powerpc/64s package is a component of the Linux Kernel, which is responsible for supporting the PowerPC architecture on 64-bit systems. It provides various functionalities and optimizations specific to this architecture. However, a vulnerability has been discovered in this package that can lead to crashes when toggling the entry flush barrier.
Vulnerability Detail
The vulnerability in powerpc/64s arises from a flaw in the code that handles the toggling of the entry flush barrier. When this barrier is toggled, it can cause crashes in the system. The impact and attack plausibility of this vulnerability have not been proven yet, but it has the potential to disrupt the stability and reliability of the system. The vulnerability was introduced in version v5.10 of the Linux Kernel and has been fixed in version v5.12.5.
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 powerpc/64s that causes crashes when toggling the entry flush barrier can be fixed by updating the Linux Kernel to version v5.12.5 or later. This update includes a commit that addresses the issue. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
powerpc/64s is a component of the Linux Kernel that supports the PowerPC architecture on 64-bit systems. It provides optimizations and functionalities specific to this architecture.
The impact of this vulnerability is not yet proven, but it has the potential to cause crashes in the system when toggling the entry flush barrier.
To fix this vulnerability, update the Linux Kernel to version v5.12.5 or later, which includes a commit that addresses the issue.
No specific workaround has been mentioned for this vulnerability.
For more information about this vulnerability, you can refer to the source link provided in the database_specific section of the vulnerability details.
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