---
id: CVE-2025-38270
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: drv: netdevsim: don't napi_complete() from netpoll

  netdevsim supports netpoll
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: drv: netdevsim: don't napi_complete() from netpoll

  netdevsim supports netpoll. Make sure we don't call napi_complete()
  from it, since it may not be scheduled. Bre…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 6.10, < 6.12.34'
  - 'linux_kernel >= 6.13, < 6.15.3'
  - linux_kernel = 6.16
patched:
  - linux_kernel 6.15.3
published: '2025-07-10'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T22:18:37.560'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-38270'
references:
  - url: 'https://git.kernel.org/stable/c/1264971017b4d7141352a7fe29021bdfce5d885d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6837dd877270c57689bd866de9f3de14172c2439'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a8ff2e362d901200a1075c3ca9c56d9c7bbef389'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00198
epssPercentile: 0.09541
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-15T21:49:13.510356Z'
ingestedAt: '2026-10-15T22:48:25.502Z'
---

## Overview

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

net: drv: netdevsim: don't napi_complete() from netpoll

netdevsim supports netpoll. Make sure we don't call napi_complete()
from it, since it may not be scheduled. Breno reports hitting a
warning in napi_complete_done():

WARNING: CPU: 14 PID: 104 at net/core/dev.c:6592 napi_complete_done+0x2cc/0x560
  __napi_poll+0x2d8/0x3a0
  handle_softirqs+0x1fe/0x710

This is presumably after netpoll stole the SCHED bit prematurely.

## Affected

- `linux_kernel >= 6.10, < 6.12.34`
- `linux_kernel >= 6.13, < 6.15.3`
- `linux_kernel = 6.16`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.15.3`