---
id: CVE-2025-71086
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: rose: fix invalid array index in rose_kill_by_device()

  rose_kill_by_device() collects sockets into a local array[] and then
  iterates over them to disconnect socke…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: rose: fix invalid array index in rose_kill_by_device()

  rose_kill_by_device() collects sockets into a local array[] and then
  iterates over them to disconnect socke…
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'
cwe:
  - CWE-129
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 4.19.304, < 4.20'
  - 'linux_kernel >= 5.4.266, < 5.5'
  - 'linux_kernel >= 5.10.206, < 5.10.248'
  - 'linux_kernel >= 5.15.146, < 5.15.198'
  - 'linux_kernel >= 6.1.70, < 6.1.160'
  - 'linux_kernel >= 6.6.9, < 6.6.120'
  - 'linux_kernel >= 6.7.1, < 6.12.64'
  - 'linux_kernel >= 6.13, < 6.18.4'
  - linux_kernel = 6.7
  - linux_kernel = 6.19
patched:
  - linux_kernel 6.18.4
published: '2026-01-13'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:18:18.587'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-71086'
references:
  - url: 'https://git.kernel.org/stable/c/1418c12cd3bba79dc56b57b61c99efe40f579981'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6595beb40fb0ec47223d3f6058ee40354694c8e4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/819fb41ae54960f66025802400c9d3935eef4042'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/92d900aac3a5721fb54f3328f1e089b44a861c38'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9f6185a32496834d6980b168cffcccc2d6b17280'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b409ba9e1e63ccf3ab4cc061e33c1f804183543e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ed2639414d43ba037f798eaf619e878309310451'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-019113.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-457936.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00147
epssPercentile: 0.03863
ingestedAt: '2026-09-08T15:33:26.995Z'
---

## Overview

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

net: rose: fix invalid array index in rose_kill_by_device()

rose_kill_by_device() collects sockets into a local array[] and then
iterates over them to disconnect sockets bound to a device being brought
down.

The loop mistakenly indexes array[cnt] instead of array[i]. For cnt <
ARRAY_SIZE(array), this reads an uninitialized entry; for cnt ==
ARRAY_SIZE(array), it is an out-of-bounds read. Either case can lead to
an invalid socket pointer dereference and also leaks references taken
via sock_hold().

Fix the index to use i.

## Affected

- `linux_kernel >= 4.19.304, < 4.20`
- `linux_kernel >= 5.4.266, < 5.5`
- `linux_kernel >= 5.10.206, < 5.10.248`
- `linux_kernel >= 5.15.146, < 5.15.198`
- `linux_kernel >= 6.1.70, < 6.1.160`
- `linux_kernel >= 6.6.9, < 6.6.120`
- `linux_kernel >= 6.7.1, < 6.12.64`
- `linux_kernel >= 6.13, < 6.18.4`
- `linux_kernel = 6.7`
- `linux_kernel = 6.19`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.18.4`