---
id: CVE-2026-23084
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  be2net: Fix NULL pointer dereference in be_cmd_get_mac_from_list

  When the parameter pmac_id_valid argument of be_cmd_get_mac_from_list() is
  set to false, the driver ma…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  be2net: Fix NULL pointer dereference in be_cmd_get_mac_from_list

  When the parameter pmac_id_valid argument of be_cmd_get_mac_from_list() is
  set to false, the driver ma…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-476
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 3.12, < 5.10.249'
  - 'linux_kernel >= 5.11, < 5.15.199'
  - 'linux_kernel >= 5.16, < 6.1.162'
  - 'linux_kernel >= 6.2, < 6.6.122'
  - 'linux_kernel >= 6.7, < 6.12.68'
  - 'linux_kernel >= 6.13, < 6.18.8'
  - linux_kernel = 6.19
patched:
  - linux_kernel 6.18.8
published: '2026-02-04'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:18:41.280'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-23084'
references:
  - url: 'https://git.kernel.org/stable/c/31410a01a86bcb98c798d01061abf1f789c4f75a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/47ffb4dcffe336f4a7bd0f3284be7aadc6484698'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4cba480c9b9a3861a515262225cb53a1f5978344'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6c3e00888dbec887125a08b51a705b9b163fcdd1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8215794403d264739cc676668087512950b2ff31'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/92c6dc181a18e6e0ddb872ed35cb48a9274829e4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e206fb415db36bad52bb90c08d46ce71ffbe8a80'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-019113.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-457936.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00147
epssPercentile: 0.03897
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-10T20:41:28.786911Z'
ingestedAt: '2026-09-08T15:33:26.994Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

be2net: Fix NULL pointer dereference in be_cmd_get_mac_from_list

When the parameter pmac_id_valid argument of be_cmd_get_mac_from_list() is
set to false, the driver may request the PMAC_ID from the firmware of the
network card, and this function will store that PMAC_ID at the provided
address pmac_id. This is the contract of this function.

However, there is a location within the driver where both
pmac_id_valid == false and pmac_id == NULL are being passed. This could
result in dereferencing a NULL pointer.

To resolve this issue, it is necessary to pass the address of a stub
variable to the function.

## Affected

- `linux_kernel >= 3.12, < 5.10.249`
- `linux_kernel >= 5.11, < 5.15.199`
- `linux_kernel >= 5.16, < 6.1.162`
- `linux_kernel >= 6.2, < 6.6.122`
- `linux_kernel >= 6.7, < 6.12.68`
- `linux_kernel >= 6.13, < 6.18.8`
- `linux_kernel = 6.19`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.18.8`