---
id: CVE-2026-74527
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  octeontx2-af: Block VFs from clobbering special CGX PKIND state

  PF and VF NIX LFs that share a CGX LMAC reuse the same hardware PKIND
  programming
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  octeontx2-af: Block VFs from clobbering special CGX PKIND state

  PF and VF NIX LFs that share a CGX LMAC reuse the same hardware PKIND
  programming. When HiGig2 or EDSA …
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 94d942c5fb970ac2166216838b278613decfa9a0 <
    a76243488740a07c81c9adf431685bb7f7c31d8c
  - >-
    Linux >= 94d942c5fb970ac2166216838b278613decfa9a0 <
    d3c6b0f48f126a36955b3fb4154a59d0b3621d97
  - >-
    Linux >= 94d942c5fb970ac2166216838b278613decfa9a0 <
    3bd438a58e910db5dc369aa25dfed1fc95f1b596
  - Linux 4.20
published: '2026-08-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T11:17:46.513'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-74527'
references:
  - url: 'https://git.kernel.org/stable/c/3bd438a58e910db5dc369aa25dfed1fc95f1b596'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a76243488740a07c81c9adf431685bb7f7c31d8c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d3c6b0f48f126a36955b3fb4154a59d0b3621d97'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00165
epssPercentile: 0.05338
ingestedAt: '2026-10-15T11:00:41.674Z'
---

## Overview

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

octeontx2-af: Block VFs from clobbering special CGX PKIND state

PF and VF NIX LFs that share a CGX LMAC reuse the same hardware PKIND
programming. When HiGig2 or EDSA parsing is enabled, a VF NIX LF alloc must
not reset the LMAC RX PKIND or default TX parse config over the PF setup.

Add cgx_get_pkind() and rvu_cgx_is_pkind_config_permitted() so VFs skip
cgx_set_pkind(), rvu_npc_set_pkind(), and NIX_AF_LFX_TX_PARSE_CFG updates
when the LMAC is using NPC_RX_HIGIG_PKIND or NPC_RX_EDSA_PKIND.

## Remediation

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