Potential Spectre V1 Gadget in dm ioctl

Kernel Updated 02 Oct 2025

Summary

24/04/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1002319: dm ioctl: prevent potential spectre v1 gadget. Affects Kernel versions < 7ae2c5b89da3cfaf856df880af27d3bb32a74b3d. No fix is published. How to fix ↓

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Background

The dm ioctl vulnerability affects the Kernel package in the Linux ecosystem. The Kernel is the core component of the Linux operating system, responsible for managing system resources and providing an interface for applications to interact with the hardware. The dm ioctl vulnerability specifically impacts the ioctl function in the device mapper (dm) subsystem. The device mapper is a framework in the Kernel that provides a way to create virtual block devices, such as logical volumes and snapshots. This vulnerability has the potential to be exploited as a Spectre V1 gadget.

Vulnerability Detail

The dm ioctl vulnerability is a potential Spectre V1 gadget. Spectre is a class of vulnerabilities that exploit speculative execution in modern processors. By manipulating the speculative execution process, an attacker can potentially access sensitive information that should be protected. In the case of the dm ioctl vulnerability, the specific details of the potential Spectre V1 gadget have not been proven, and the actual impact and attack plausibility are yet to be determined. It is important to note that this vulnerability has been fixed in the Linux Kernel version v4.19.238 by commit 7ae2c5b89da3cfaf856df880af27d3bb32a74b3d.

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 dm ioctl vulnerability in the Kernel package has the potential to be exploited as a Spectre V1 gadget. It is recommended to update the Linux Kernel to version v4.19.238 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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