ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure

Kernel Updated 02 Oct 2025

Summary

31/05/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000069: ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure. Affects Kernel versions >= ca9ae5ec4ef0ed13833b03297ab319676965492c, < 596e079c362ac17ed02aa1b99fdc444d62072a01. No fix is published. How to fix ↓

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Background

The ACPI (Advanced Configuration and Power Interface) is an open standard for power management and configuration of hardware devices. The GTDT (Generic Timer Description Table) is a part of the ACPI specification that provides information about the system's timers. The Linux Kernel is an open-source operating system kernel used by various Linux distributions. This vulnerability affects the Linux Kernel package.

Vulnerability Detail

The vulnerability in the ACPI GTDT implementation can lead to the corruption of interrupt mappings when a watchdow probe fails. This can potentially result in system instability or crashes. The issue was introduced in version v4.12 of the Linux Kernel and was fixed in version v5.12.3. The vulnerability has not been proven to have a specific attack vector or impact, but it is important to address it to ensure system stability and security.

How To Fix

No fixed version is published for this vulnerability.

To fix this vulnerability, it is recommended to update the Linux Kernel package to version v5.12.3 or later. This can be done by downloading the updated kernel source code from the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and compiling it for your system. Alternatively, you can check for available updates through your Linux distribution's package manager and install the latest kernel package.

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Workaround

There is no specific workaround mentioned for this vulnerability.

Conclusion

The ACPI GTDT vulnerability in the Linux Kernel can result in interrupt mapping corruption and potential system instability. It is recommended to update the Linux Kernel package to version v5.12.3 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.

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