Review reviewHigh

CVE-2025-39972

Linux

In the Linux kernel, the following vulnerability has been resolved: i40e: fix idx validation in i40e_validate_queue_map Ensure idx is within range of active/initialized TCs when iterating over vf->ch[idx] in i40e_validate_queue_map().

CVSS: 8.8
EPSS: 0.14%
CISA KEV: Not listed
Published: 2025.10.15

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.14%

Technical severityCVSS 8.8

Vulnerability overview

Affected product and versions

Product: Linux
Affected versions: >= c27eac48160de72dee33d42b5a33cc7b8a2eb1f5 < b6cb93a7ff208f324c7ec581d72995f80e115e0e, >= c27eac48160de72dee33d42b5a33cc7b8a2eb1f5 < 6f15a7b34fae75e745bdc2ec05e06ddfd0dd2f3c, >= c27eac48160de72dee33d42b5a33cc7b8a2eb1f5 < 34dfac0c904829967d500c51f216916ce1452957, >= c27eac48160de72dee33d42b5a33cc7b8a2eb1f5 < 4d5e804a9e19b639b18fd13664dbad3c03c79e61, >= c27eac48160de72dee33d42b5a33cc7b8a2eb1f5 < 50a1e2f50f6c22b93b94eb8d168a1be3c05bf5cd, >= c27eac48160de72dee33d42b5a33cc7b8a2eb1f5 < cc4191e8ef40d2249c1b9a8617d22ec8a976b574, >= c27eac48160de72dee33d42b5a33cc7b8a2eb1f5 < d4e3eaaa3cb3af77836d806c89cd6ebf533a7320, >= c27eac48160de72dee33d42b5a33cc7b8a2eb1f5 < aa68d3c3ac8d1dcec40d52ae27e39f6d32207009, >= 4.17
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE: Not available