Critical Vulnerability in Linux Package Affecting Debian Versions 11-14
Summary
DEBIAN-CVE-2026-22991: ... Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
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 affects multiple Debian versions, including 11, 12, 13, and 14, potentially exposing systems to various security risks.
Vulnerability Detail
CVE-2026-22991 is a critical vulnerability that arises from a flaw in the Linux kernel, which could allow unauthorized access or privilege escalation. The vulnerability originates from improper handling of certain system calls, leading to potential exploitation by malicious actors. If left unaddressed, it could result in significant security breaches, including data theft or system compromise.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a temporary workaround, users can limit access to the affected systems and monitor for any unusual activity until the patch is applied. Additionally, consider implementing stricter user permissions to mitigate potential exploitation.
Conclusion
CVE-2026-22991 poses a significant risk to users of the Linux package across multiple Debian versions. It is crucial to address this vulnerability promptly by updating to the latest patched version. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities effectively.
See every vulnerability recorded for linux →
FAQ
CVE-2026-22991 is a critical vulnerability in the Linux kernel that could allow unauthorized access or privilege escalation.
The vulnerability affects Debian versions 11, 12, 13, and 14.
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.
As a temporary measure, limit access to the affected systems and monitor for unusual activity until you can apply the patch.
Yes, Vulert allows you to monitor vulnerabilities in real-time using just a manifest file like package-lock.json, without requiring code access or installation.
References
Related vulnerabilities
Recent vulnerabilities recorded for linux.
