CVE-2026-23070
Unknown Unknown - Not Provided

Kernel Panic Due to Missing fwdata Checks in Octeontx2-af

Publication date: 2026-02-04

Last updated on: 2026-03-25

Assigner: kernel.org

Description
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

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Meta Information

Published
2026-02-04
Last Modified
2026-03-25
Generated
2026-07-06
AI Q&A
2026-02-04
EPSS Evaluated
2026-07-05
NVD
CVE-2026-23070
EUVD
EUVD-2026-5474

Affected Vendors & Products

Showing 7 associated CPEs
Vendor Product Version / Range
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel From 6.9 (inc) to 6.18.8 (exc)

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability exists in the Linux kernel related to the Octeontx2-af firmware data handling. The firmware populates MAC address, link modes, and EEPROM data in a shared firmware structure accessed by the kernel via the MAC block (CGX/RPM). However, on boards that boot without the MAC block, the kernel attempts to access this firmware data improperly, leading to kernel panics and internal errors.

Impact Analysis

The impact of this vulnerability is that it can cause kernel panics on affected systems. Specifically, if a board boots without the MAC block but the kernel tries to access the firmware data as if the MAC block were present, it results in an internal error and system instability. This can lead to system crashes and potential denial of service.

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