Linux Kernel Vulnerability Affecting Queue Fairness in Class Management
CVE-2026-23105

Currently unrated

Key Information:

Vendor: Linux
Status: Linux
Vendor: CVE Published:; 4 February 2026

What is CVE-2026-23105?

A vulnerability in the Linux kernel related to the Queue Fairness (qfq) scheduling mechanism has been addressed. This issue involved improper determination of class activation using child queue lengths, which could lead to inconsistencies in resource management and potential exploits through manipulation of queue length metrics. The resolution shifts the logic to utilize 'cl_is_active' for more reliable class activation determination, reducing the risk of manipulation and enhancing overall system stability and security.

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