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Review reviewHigh

CVE-2025-40104

Linux

In the Linux kernel, the following vulnerability has been resolved: ixgbevf: fix mailbox API compatibility by negotiating supported features There was backward compatibility in the terms of mailbox API. Various drivers from various OSes supporting 10G adapters from Intel portfolio could easily negotiate mailbox API. This convention has been broken since introducing API 1.4. Commit 0062e7cc955e ("ixgbevf: add VF IPsec offload code") added support for IPSec which is specific only for the kernel ixgbe driver. None of the rest of the Intel 10G PF/VF drivers supports it. And actually lack of sup...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2025.10.30
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: ixgbevf: fix mailbox API compatibility by negotiating supported features There was backward compatibility in the terms of mailbox API. Various drivers from various OSes supporting 10G adapters from Intel portfolio could easily negotiate mailbox API. This convention has been broken since introducing API 1.4. Commit 0062e7cc955e ("ixgbevf: add VF IPsec offload code") added support for IPSec which is specific only for the kernel ixgbe driver. None of the rest of the Intel 10G PF/VF drivers supports it. And actually lack of sup...

Affected product and versions

Product
Linux
Affected versions
>= 0062e7cc955e0827a88570ed36ea511a7dcb391e < 871ac1cd4ce4804defcb428cbb003fd84c415ff4, >= 0062e7cc955e0827a88570ed36ea511a7dcb391e < 2e0aab9ddaf1428602c78f12064cd1e6ffcc4d18, >= 0062e7cc955e0827a88570ed36ea511a7dcb391e < bf580112ed61736c2645a893413a04732505d4b1, >= 0062e7cc955e0827a88570ed36ea511a7dcb391e < a376e29b1b196dc90b50df7e5e3947e3026300c4, >= 0062e7cc955e0827a88570ed36ea511a7dcb391e < a7075f501bd33c93570af759b6f4302ef0175168, >= 4.20
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. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 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:U/C:H/I:H/A:H
CWE
Not available