Linux Kernel i40e Component Vulnerability Exposes Configuration Flaws
CVE-2025-39971

Currently unrated

Key Information:

Vendor: Linux
Status: Linux
Vendor: CVE Published:; 15 October 2025

What is CVE-2025-39971?

A vulnerability in the Linux kernel's i40e component allows for improper index validation during the configuration of virtual functions. This flaw arises when validating indices against the number of active or initialized traffic classes (TCs). The issue occurs within the i40e_vc_config_queues_msg() function, which can lead to unexpected behavior if the indices exceed the valid range, potentially resulting in system instability or exploitation.

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