---
id: CVE-2026-23070
title: 'Octeontx2-af: Add proper checks for fwdata'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  Octeontx2-af: Add proper checks for fwdata

  firmware populates MAC address, link modes (supported, advertised)
  and EEPROM data in shared firmware structure which kernel…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 997814491cee7b19c162ad82439818e555f99ad9 <
    079050a23de6b7505595e4af75b36c34f0e9627e
  - >-
    Linux >= 997814491cee7b19c162ad82439818e555f99ad9 <
    e343973fab43c266a40e4e0dabdc4216db6d5eff
  - >-
    Linux >= 997814491cee7b19c162ad82439818e555f99ad9 <
    4a3dba48188208e4f66822800e042686784d29d1
  - Linux 6.9
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T21:19:09.906598Z'
published: '2026-02-04'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T21:23:16.364Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-23070'
references:
  - url: 'https://git.kernel.org/stable/c/079050a23de6b7505595e4af75b36c34f0e9627e'
  - url: 'https://git.kernel.org/stable/c/e343973fab43c266a40e4e0dabdc4216db6d5eff'
  - url: 'https://git.kernel.org/stable/c/4a3dba48188208e4f66822800e042686784d29d1'
tags:
  - cve.org
epss: 0.00145
epssPercentile: 0.03754
ingestedAt: '2026-11-05T22:38:32.067Z'
---

## Overview

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

Octeontx2-af: Add proper checks for fwdata

firmware populates MAC address, link modes (supported, advertised)
and EEPROM data in shared firmware structure which kernel access
via MAC block(CGX/RPM).

Accessing fwdata, on boards booted with out MAC block leading to
kernel panics.

Internal error: Oops: 0000000096000005 [#1]  SMP
[   10.460721] Modules linked in:
[   10.463779] CPU: 0 UID: 0 PID: 174 Comm: kworker/0:3 Not tainted 6.19.0-rc5-00154-g76ec646abdf7-dirty #3 PREEMPT
[   10.474045] Hardware name: Marvell OcteonTX CN98XX board (DT)
[   10.479793] Workqueue: events work_for_cpu_fn
[   10.484159] pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[   10.491124] pc : rvu_sdp_init+0x18/0x114
[   10.495051] lr : rvu_probe+0xe58/0x1d18

## Affected

- `Linux >= 997814491cee7b19c162ad82439818e555f99ad9 < 079050a23de6b7505595e4af75b36c34f0e9627e`
- `Linux >= 997814491cee7b19c162ad82439818e555f99ad9 < e343973fab43c266a40e4e0dabdc4216db6d5eff`
- `Linux >= 997814491cee7b19c162ad82439818e555f99ad9 < 4a3dba48188208e4f66822800e042686784d29d1`
- `Linux 6.9`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.