---
id: CVE-2025-37933
title: 'octeon_ep: Fix host hang issue during device reboot'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  octeon_ep: Fix host hang issue during device reboot

  When the host loses heartbeat messages from the device,
  the driver calls the device-specific ndo_stop function,
  whi…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 5cb96c29aa0ea359e4f5d30585538dc6a847d69d <
    7e1ca1bed3f66e00377f7d2147be390144924276
  - >-
    Linux >= 5cb96c29aa0ea359e4f5d30585538dc6a847d69d <
    c8d788f800f83b94d9db8b3dacc1d26be38a6ef4
  - >-
    Linux >= 5cb96c29aa0ea359e4f5d30585538dc6a847d69d <
    6d1052423518e7d0aece9af5e77bbc324face8f1
  - >-
    Linux >= 5cb96c29aa0ea359e4f5d30585538dc6a847d69d <
    34f42736b325287a7b2ce37e415838f539767bda
  - Linux 6.4
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:45:21.738226Z'
published: '2025-05-20'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:52:08.522Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-37933'
references:
  - url: 'https://git.kernel.org/stable/c/7e1ca1bed3f66e00377f7d2147be390144924276'
  - url: 'https://git.kernel.org/stable/c/c8d788f800f83b94d9db8b3dacc1d26be38a6ef4'
  - url: 'https://git.kernel.org/stable/c/6d1052423518e7d0aece9af5e77bbc324face8f1'
  - url: 'https://git.kernel.org/stable/c/34f42736b325287a7b2ce37e415838f539767bda'
tags:
  - cve.org
epss: 0.00207
epssPercentile: 0.10884
ingestedAt: '2026-11-05T22:38:31.895Z'
---

## Overview

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

octeon_ep: Fix host hang issue during device reboot

When the host loses heartbeat messages from the device,
the driver calls the device-specific ndo_stop function,
which frees the resources. If the driver is unloaded in
this scenario, it calls ndo_stop again, attempting to free
resources that have already been freed, leading to a host
hang issue. To resolve this, dev_close should be called
instead of the device-specific stop function.dev_close
internally calls ndo_stop to stop the network interface
and performs additional cleanup tasks. During the driver
unload process, if the device is already down, ndo_stop
is not called.

## Affected

- `Linux >= 5cb96c29aa0ea359e4f5d30585538dc6a847d69d < 7e1ca1bed3f66e00377f7d2147be390144924276`
- `Linux >= 5cb96c29aa0ea359e4f5d30585538dc6a847d69d < c8d788f800f83b94d9db8b3dacc1d26be38a6ef4`
- `Linux >= 5cb96c29aa0ea359e4f5d30585538dc6a847d69d < 6d1052423518e7d0aece9af5e77bbc324face8f1`
- `Linux >= 5cb96c29aa0ea359e4f5d30585538dc6a847d69d < 34f42736b325287a7b2ce37e415838f539767bda`
- `Linux 6.4`

## Remediation

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