Vulnerability in Linux Kernel: powerpc/64s - Crashes when Toggling Entry Flush Barrier

Kernel Updated 02 Oct 2025

Summary

31/05/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

UVI-2021-1000466: powerpc/64s: Fix crashes when toggling entry flush barrier. Affects Kernel versions >= db01cad9efe3c3838a6b3a3f68affd295c4b92d6, < ee4b7aab93c2631c3bb0753023c5dda592bb666b. No fix is published. How to fix ↓

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Background

The Linux Kernel is a critical component of the Linux operating system, responsible for managing system resources and providing an interface between hardware and software. The powerpc/64s subsystem within the Kernel specifically handles operations related to the PowerPC architecture on 64-bit systems. This vulnerability affects the powerpc/64s subsystem and can lead to crashes when toggling the entry flush barrier.

Vulnerability Detail

The vulnerability arises from a flaw in the powerpc/64s subsystem that causes crashes when the entry flush barrier is toggled. The exact impact and attack plausibility of this vulnerability have not been proven yet. However, it is important to address this issue as it can potentially disrupt system stability and availability. The vulnerability was introduced in Linux Kernel version v4.14.208 and has been fixed in version v4.14.233.

How To Fix

No fixed version is published for this vulnerability.

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Conclusion

In conclusion, the vulnerability in the powerpc/64s subsystem of the Linux Kernel can cause crashes when toggling the entry flush barrier. It is recommended to update the Kernel to version v4.14.233 or later to mitigate this issue. For further support and assistance in vulnerability remediation, please contact DevNack.com.

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