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VulnerabilityPublished Updated

CVE-2026-23070: Linux kernel · Octeontx2-af: Add proper checks for fwdata

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in e343973fab43c266a40e4e0dabdc4216db6d5eff : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:49 UTC

Severity
Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch
Available – fixed in e343973fab43c266a40e4e0dabdc4216db6d5eff, 079050a23de6b7505595e4af75b36c34f0e9627e, 4a3dba48188208e4f66822800e042686784d29d1

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 Feb 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade Linux kernel to e343973fab43c266a40e4e0dabdc4216db6d5eff, 079050a23de6b7505595e4af75b36c34f0e9627e or 4a3dba48188208e4f66822800e042686784d29d1.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 997814491cee7b19c162ad82439818e555f99ad9, < e343973fab43c266a40e4e0dabdc4216db6d5eff
Fixed in
  • e343973fab43c266a40e4e0dabdc4216db6d5eff
LinuxLinuxAffected
  • ≥ 997814491cee7b19c162ad82439818e555f99ad9, < 079050a23de6b7505595e4af75b36c34f0e9627e
Fixed in
  • 079050a23de6b7505595e4af75b36c34f0e9627e
LinuxLinuxAffected
  • ≥ 997814491cee7b19c162ad82439818e555f99ad9, < 4a3dba48188208e4f66822800e042686784d29d1
Fixed in
  • 4a3dba48188208e4f66822800e042686784d29d1
LinuxLinuxAffected
  • =6.9
Fixed in–

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

References

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