---
id: CVE-2026-90085
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  octeontx2-af: fix NULL deref in NIX TM tree debugfs read path

  rvu_dbg_nix_tm_tree_display() dereferences pfvf->sq_ctx without
  checking whether the SQ context has been …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  octeontx2-af: fix NULL deref in NIX TM tree debugfs read path

  rvu_dbg_nix_tm_tree_display() dereferences pfvf->sq_ctx without
  checking whether the SQ context has been …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 <
    fb736d733b0a60377cf53010571c261886446fd5
  - >-
    Linux >= b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 <
    537e11a1700f64dc6754108f0e1333ad63d4f548
  - >-
    Linux >= b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 <
    fdf7358e2688f12eff41290bc45030b7aff0845e
  - >-
    Linux >= b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 <
    ec65631bd5ec251cdf67a4919fac7a3149a6e235
  - Linux 6.11
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:16:57.957'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90085'
references:
  - url: 'https://git.kernel.org/stable/c/537e11a1700f64dc6754108f0e1333ad63d4f548'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ec65631bd5ec251cdf67a4919fac7a3149a6e235'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fb736d733b0a60377cf53010571c261886446fd5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fdf7358e2688f12eff41290bc45030b7aff0845e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-17T16:21:47.894Z'
epss: 0.002
epssPercentile: 0.10172
---

## Overview

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

octeontx2-af: fix NULL deref in NIX TM tree debugfs read path

rvu_dbg_nix_tm_tree_display() dereferences pfvf->sq_ctx without
checking whether the SQ context has been allocated. Reading
/sys/kernel/debug/octeontx2/nix/tm_tree for a NIX LF whose transmit
queues are not set up triggers a kernel oops.

Guard the read path the same way rvu_dbg_nix_tm_tree_write() already
does and return -EINVAL with a seq_file message when sq_ctx is NULL.

## Remediation

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