BaseFortify

Publication date: 2025-10-15

Last updated on: 2025-10-16

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: i40e: fix validation of VF state in get resources VF state I40E_VF_STATE_ACTIVE is not the only state in which VF is actually active so it should not be used to determine if a VF is allowed to obtain resources. Use I40E_VF_STATE_RESOURCES_LOADED that is set only in i40e_vc_get_vf_resources_msg() and cleared during reset.

CVSS Scores

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Meta Information

Published

2025-10-15

Last Modified

2025-10-16

Generated

2026-07-06

AI Q&A

2025-10-15

EPSS Evaluated

2026-07-05

NVD

CVE-2025-39969

EUVD

EUVD-2025-34603

Affected Vendors & Products

Vendor	Product	Version / Range
intel	linux_kernel	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability in the Linux kernel's i40e driver involves improper validation of the Virtual Function (VF) state when obtaining resources. The driver incorrectly uses the VF state I40E_VF_STATE_ACTIVE to determine if a VF is allowed to obtain resources, but this state does not cover all cases where a VF is active. The correct state to check is I40E_VF_STATE_RESOURCES_LOADED, which is set only when resources are properly allocated and cleared during reset. This fix ensures that resource allocation checks are accurate.

Impact Analysis

If exploited, this vulnerability could allow a Virtual Function (VF) to obtain resources improperly because the driver does not correctly validate the VF's active state. This could lead to resource misallocation or instability in the network device's operation, potentially affecting system reliability or performance.

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