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CVE-2025-39971

i40e: fix idx validation in config queues msg

HIGH
8.8
CVSS Score
Published: October 15, 2025 at 07:55 AM UTC
Updated: October 19, 2026 at 09:10 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: i40e: fix idx validation in config queues msg Ensure idx is within range of active/initialized TCs when iterating over vf->ch[idx] in i40e_vc_config_queues_msg().

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
4.17c27eac48160de72dee33d42b5a33cc7b8a2eb1f5
Vendor states this is fixed in 1fa0aadade34481c567cdf4a897c0d4e4d548bd1 (fixed)
Vendor states this is fixed in 2cc26dac0518d2fa9b67ec813ee60e183480f98a (fixed)
Vendor states this is fixed in 5c1f96123113e0bdc6d8dc2b0830184c93da9f65 (fixed)
Vendor states this is fixed in 8b9c7719b0987b1c6c5fc910599f3618a558dbde (fixed)
Vendor states this is fixed in a6ff2af78343eceb0f77ab1a2fe802183bc21648 (fixed)
Vendor states this is fixed in bfcc1dff429d4b99ba03e40ddacc68ea4be2b32b (fixed)
Vendor states this is fixed in f1ad24c5abe1eaef69158bac1405a74b3c365115 (fixed)
Vendor states this is fixed in f5f91d164af22e7147130ef8bebbdb28d8ecc6e2 (fixed)
Vendor states this is fixed in 4.17 (unaffected)
Vendor states this is fixed in 5.10.245 (unaffected)
Vendor states this is fixed in 5.15.194 (unaffected)
Vendor states this is fixed in 5.4.300 (unaffected)
Vendor states this is fixed in 6.1.155 (unaffected)
Vendor states this is fixed in 6.12.50 (unaffected)
Vendor states this is fixed in 6.16.10 (unaffected)
Vendor states this is fixed in 6.17 (unaffected)
Vendor states this is fixed in 6.6.109 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (8)

Source: cverecord
https://git.kernel.org/stable/c/a6ff2af78343eceb0f77ab1a2fe802183bc21648
Source: cverecord
https://git.kernel.org/stable/c/f5f91d164af22e7147130ef8bebbdb28d8ecc6e2
Source: cverecord
https://git.kernel.org/stable/c/1fa0aadade34481c567cdf4a897c0d4e4d548bd1
Source: cverecord
https://git.kernel.org/stable/c/8b9c7719b0987b1c6c5fc910599f3618a558dbde
Source: cverecord
https://git.kernel.org/stable/c/2cc26dac0518d2fa9b67ec813ee60e183480f98a
Source: cverecord
https://git.kernel.org/stable/c/bfcc1dff429d4b99ba03e40ddacc68ea4be2b32b
Source: cverecord
https://git.kernel.org/stable/c/5c1f96123113e0bdc6d8dc2b0830184c93da9f65
Source: cverecord
https://git.kernel.org/stable/c/f1ad24c5abe1eaef69158bac1405a74b3c365115

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHLinux
Vector?

Quick Info

StatusDEFERRED

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