CVE-2025-40264

kernel: Linux kernel: be2net driver NULL pointer dereference leading to denial of service

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · December 4, 2025

Updated · June 27, 2026

Description

A flaw was found in the Linux kernel's be2net driver. This vulnerability occurs when the be_insert_vlan_in_pkt() function is called with a NULL wrb_params argument during packet processing, specifically when handling a workaround for certain packets. This can lead to a NULL pointer dereference, potentially causing a system crash and resulting in a Denial of Service (DoS).

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference