---
id: CVE-2026-93278
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  staging: octeon: add missing napi_disable in cvm_oct_rx_shutdown

  cvm_oct_rx_shutdown calls free_irq and netif_napi_del without
  disabling the napi instance first
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  staging: octeon: add missing napi_disable in cvm_oct_rx_shutdown

  cvm_oct_rx_shutdown calls free_irq and netif_napi_del without
  disabling the napi instance first. As th…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 3368c784bcf77124aaf39372e627016c36bd4472 <
    158389d7af04bbf0664d91c2ce31fcc9eeace1eb
  - >-
    Linux >= 3368c784bcf77124aaf39372e627016c36bd4472 <
    c124049c3a7006fd6caf629139a5722610bbffb4
  - >-
    Linux >= 3368c784bcf77124aaf39372e627016c36bd4472 <
    98f9036b2254c928cb44da0c77dba38f66f7d8f1
  - >-
    Linux >= 3368c784bcf77124aaf39372e627016c36bd4472 <
    b38fbd68cc36b4f478a1e3cfc169b8616ae1337d
  - >-
    Linux >= 3368c784bcf77124aaf39372e627016c36bd4472 <
    89f9f433271fad9351de6a3c713b45b2cfb23e4a
  - >-
    Linux >= 3368c784bcf77124aaf39372e627016c36bd4472 <
    b2243ffaac14cc3639b5b32a371aac37f96ee554
  - >-
    Linux >= 3368c784bcf77124aaf39372e627016c36bd4472 <
    c0a9a8586a63fda49e61a6b83360feac2a60d898
  - Linux 2.6.34
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T16:17:25.017'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93278'
references:
  - url: 'https://git.kernel.org/stable/c/158389d7af04bbf0664d91c2ce31fcc9eeace1eb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/89f9f433271fad9351de6a3c713b45b2cfb23e4a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/98f9036b2254c928cb44da0c77dba38f66f7d8f1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b2243ffaac14cc3639b5b32a371aac37f96ee554'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b38fbd68cc36b4f478a1e3cfc169b8616ae1337d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c0a9a8586a63fda49e61a6b83360feac2a60d898'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c124049c3a7006fd6caf629139a5722610bbffb4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T16:47:15.841Z'
epss: 0.00192
epssPercentile: 0.07851
---

## Overview

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

staging: octeon: add missing napi_disable in cvm_oct_rx_shutdown

cvm_oct_rx_shutdown calls free_irq and netif_napi_del without
disabling the napi instance first. As the free_irq only waits
for completion of hard interrupt handlers, the napi poll
function could still be active. If cvm_oct_remove proceeds to
free the plat structure (which holds the NAPI instances), the
active poll function will access freed memory, resulting in a
use-after-free crash.

## Remediation

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