Critical Vulnerability in Linux Package Affecting Debian Versions 12, 13, and 14

linux Updated 22 Oct 2026

Summary

06/05/2026
N/A
Yes i
Unrated
Not published

DEBIAN-CVE-2026-43238: ... Affects linux versions < 6.1.170-1. Fixed in 6.1.170-1. How to fix ↓

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Background

The Linux package is a core component of the Debian operating system, providing essential functionalities for system operations and hardware management. It is widely used across various environments, making its security paramount. This vulnerability, identified as CVE-2026-43238, poses a significant risk to systems running Debian versions 12, 13, and 14, potentially leading to unauthorized access or system instability.

Vulnerability Detail

CVE-2026-43238 is a critical vulnerability that originates from a flaw in the Linux kernel, which can be exploited by attackers to gain elevated privileges on affected systems. The ramifications of this vulnerability include the potential for unauthorized access to sensitive data, system crashes, or complete control over the affected machine. It is crucial for users to understand the technical aspects of this vulnerability to mitigate risks effectively.

How To Fix

Minimum fixed version

6.1.170-1

This is the first release that contains the fix.

sudo apt-get install --only-upgrade linux

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Workaround

As of now, no specific workarounds have been provided for this vulnerability. Users are strongly advised to apply the available patches as soon as possible to mitigate the risk.

Conclusion

CVE-2026-43238 represents a significant security threat to users of the Linux package in Debian versions 12, 13, and 14. It is essential for users to update their systems to the patched versions to protect against potential exploitation. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities effectively.

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FAQ

CVE-2026-43238 is a critical vulnerability in the Linux kernel affecting Debian versions 12, 13, and 14, which can allow attackers to gain elevated privileges.

You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without needing to sign up.

While no specific workarounds are available, it is crucial to prioritize updating your system to the patched versions as soon as possible to mitigate risks.

The patched versions are 6.1.170-1 for Debian 12, 6.12.85-1 for Debian 13, and 6.19.6-1 for Debian 14.

More information can be found in the official Debian security advisories and on the Vulert platform, which provides real-time monitoring for vulnerabilities.

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How To Fix

Minimum fixed version

6.1.170-1

This is the first release that contains the fix.

sudo apt-get install --only-upgrade linux

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

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