PT-2026-6140 · Unknown+1 · Octeontx2-Af+1

Published 2026-01-01 · Updated 2026-03-26 · CVE-2026-23070

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions 6.19.0-rc5-00154-g76ec646abdf7-dirty through 6.19.0-rc5-00154-g76ec646abdf7-dirty

Description The Linux kernel contains a flaw related to insufficient checks for firmware data (fwdata) in the Octeontx2-af driver. Specifically, the firmware populates MAC address, link modes, and EEPROM data into a shared structure accessible by the kernel via the MAC block (CGX/RPM). Accessing this fwdata on systems booted without a MAC block can lead to kernel panics. The issue occurs during the rvu sdp init function and is triggered when accessing fwdata without proper validation.

Recommendations Linux kernel version 6.19.0-rc5-00154-g76ec646abdf7-dirty: Update to a newer version of the Linux kernel that includes the fix for this issue.

Exploit

Fix

Related Identifiers

CVE-2026-23070

OPENSUSE-SU-2026:20416-1

SUSE-SU-2026:0962-1

SUSE-SU-2026:1081-1

SUSE-SU-2026:20838-1

SUSE-SU-2026:20931-1

SUSE-SU-2026:21284-1

Affected Products

Linux Kernel

Octeontx2-Af

References · 469

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23070.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2026:20838-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-23070 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23070 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:1081-1 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2026-50160.html · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0962-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23070 · Security Note
• https://git.kernel.org/stable/c/4a3dba48188208e4f66822800e042686784d29d1 · Patch
• https://cve.org/CVERecord?id=CVE-2026-23070 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23070 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20931-1 · Vendor Advisory
• https://git.kernel.org/stable/c/e343973fab43c266a40e4e0dabdc4216db6d5eff · Patch
• https://ubuntu.com/security/CVE-2026-23070 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-23070 · Vendor Advisory