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

linux Updated 22 Oct 2026

Summary

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

DEBIAN-CVE-2026-43064: ... 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 serves as the foundation for various applications and services running on Debian systems. This vulnerability poses a significant risk to the integrity and security of systems utilizing these Debian versions.

Vulnerability Detail

CVE-2026-43064 is a critical vulnerability identified in the Linux package that affects Debian versions 12, 13, and 14. The vulnerability originates from a flaw in the kernel that could allow an attacker to escalate privileges, potentially leading to unauthorized access and control over the affected systems. The ramifications of this vulnerability are severe, as it could enable malicious actors to execute arbitrary code with elevated privileges, compromising the entire system.

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. It is highly recommended to apply the patches as soon as they are available to mitigate the risk.

Conclusion

CVE-2026-43064 represents a significant security risk for users of Debian versions 12, 13, and 14 due to its potential for privilege escalation. Users are urged to update their Linux packages to the latest patched versions to safeguard their systems.

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FAQ

CVE-2026-43064 is a critical vulnerability in the Linux package affecting Debian versions 12, 13, and 14, allowing potential privilege escalation.

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

The risks include unauthorized access and control over the system, which could lead to data breaches and system compromise.

You can update your Linux package by running 'sudo apt-get update && sudo apt-get upgrade linux' in your terminal.

Currently, there are no specific workarounds available. The best course of action is to apply the patches as soon as they are released.

Related vulnerabilities

Recent vulnerabilities recorded for linux.

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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