---
id: CVE-2025-71274
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  rpmsg: core: fix race in driver_override_show() and use core helper

  The driver_override_show function reads the driver_override string
  without holding the device_lock.…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  rpmsg: core: fix race in driver_override_show() and use core helper

  The driver_override_show function reads the driver_override string
  without holding the device_lock.…
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-362
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 4.18, < 5.10.252'
  - 'linux_kernel >= 5.11, < 5.15.202'
  - 'linux_kernel >= 5.16, < 6.1.165'
  - 'linux_kernel >= 6.2, < 6.6.128'
  - 'linux_kernel >= 6.7, < 6.12.75'
  - 'linux_kernel >= 6.13, < 6.18.16'
  - 'linux_kernel >= 6.19, < 6.19.6'
patched:
  - linux_kernel 6.19.6
published: '2026-05-06'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-71274'
references:
  - url: 'https://git.kernel.org/stable/c/2e4a70f3c30910427e5ea848b799066d67b963d5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/392c6b68334aa0e0ae9aba95c0a366bcb0d92f5d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/42023d4b6d2661a40ee2dcf7e1a3528a35c638ca'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/47615557447185917afa432b7958f87583c417cb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7654e6e3cd6bdee9602f6063b3c670bd556d7e61'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/90c8353f471821d7ccd4fe573a2402e056192494'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/954557957177c3c13d7c655976665b1170da5e50'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d66b8074c555e8abb0ae19eea1c9f3635498bdde'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00099
epssPercentile: 0.00781
ingestedAt: '2026-10-14T13:30:58.485Z'
---

## Overview

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

rpmsg: core: fix race in driver_override_show() and use core helper

The driver_override_show function reads the driver_override string
without holding the device_lock. However, the store function modifies
and frees the string while holding the device_lock. This creates a race
condition where the string can be freed by the store function while
being read by the show function, leading to a use-after-free.

To fix this, replace the rpmsg_string_attr macro with explicit show and
store functions. The new driver_override_store uses the standard
driver_set_override helper. Since the introduction of
driver_set_override, the comments in include/linux/rpmsg.h have stated
that this helper must be used to set or clear driver_override, but the
implementation was not updated until now.

Because driver_set_override modifies and frees the string while holding
the device_lock, the new driver_override_show now correctly holds the
device_lock during the read operation to prevent the race.

Additionally, since rpmsg_string_attr has only ever been used for
driver_override, removing the macro simplifies the code.

## Affected

- `linux_kernel >= 4.18, < 5.10.252`
- `linux_kernel >= 5.11, < 5.15.202`
- `linux_kernel >= 5.16, < 6.1.165`
- `linux_kernel >= 6.2, < 6.6.128`
- `linux_kernel >= 6.7, < 6.12.75`
- `linux_kernel >= 6.13, < 6.18.16`
- `linux_kernel >= 6.19, < 6.19.6`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.19.6`