---
id: CVE-2026-31527
title: 'driver core: platform: use generic driver_override infrastructure'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  driver core: platform: use generic driver_override infrastructure

  When a driver is probed through __driver_attach(), the bus' match()
  callback is called without the de…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 3d713e0e382e6fcfb4bba1501645b66c129ad60b <
    492349e5e4a369a8b62781100a3ade470bf1ce6b
  - >-
    Linux >= 3d713e0e382e6fcfb4bba1501645b66c129ad60b <
    9a6086d2a828dd2ff74cf9abcae456670febd71f
  - >-
    Linux >= 3d713e0e382e6fcfb4bba1501645b66c129ad60b <
    7c02a9bd7d14a89065fcf672b86d8e1d1a41d3b1
  - >-
    Linux >= 3d713e0e382e6fcfb4bba1501645b66c129ad60b <
    edee7ee5a14c3b33f6d54641f5af5c5e9180992d
  - >-
    Linux >= 3d713e0e382e6fcfb4bba1501645b66c129ad60b <
    2b38efc05bf7a8568ec74bfffea0f5cfa62bc01d
  - Linux 3.17
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T21:37:40.862642Z'
published: '2026-04-22'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T21:45:06.341Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-31527'
references:
  - url: 'https://git.kernel.org/stable/c/492349e5e4a369a8b62781100a3ade470bf1ce6b'
  - url: 'https://git.kernel.org/stable/c/9a6086d2a828dd2ff74cf9abcae456670febd71f'
  - url: 'https://git.kernel.org/stable/c/7c02a9bd7d14a89065fcf672b86d8e1d1a41d3b1'
  - url: 'https://git.kernel.org/stable/c/edee7ee5a14c3b33f6d54641f5af5c5e9180992d'
  - url: 'https://git.kernel.org/stable/c/2b38efc05bf7a8568ec74bfffea0f5cfa62bc01d'
tags:
  - cve.org
epss: 0.00129
epssPercentile: 0.02527
ingestedAt: '2026-11-05T23:41:31.971Z'
---

## Overview

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

driver core: platform: use generic driver_override infrastructure

When a driver is probed through __driver_attach(), the bus' match()
callback is called without the device lock held, thus accessing the
driver_override field without a lock, which can cause a UAF.

Fix this by using the driver-core driver_override infrastructure taking
care of proper locking internally.

Note that calling match() from __driver_attach() without the device lock
held is intentional. [1]

## Affected

- `Linux >= 3d713e0e382e6fcfb4bba1501645b66c129ad60b < 492349e5e4a369a8b62781100a3ade470bf1ce6b`
- `Linux >= 3d713e0e382e6fcfb4bba1501645b66c129ad60b < 9a6086d2a828dd2ff74cf9abcae456670febd71f`
- `Linux >= 3d713e0e382e6fcfb4bba1501645b66c129ad60b < 7c02a9bd7d14a89065fcf672b86d8e1d1a41d3b1`
- `Linux >= 3d713e0e382e6fcfb4bba1501645b66c129ad60b < edee7ee5a14c3b33f6d54641f5af5c5e9180992d`
- `Linux >= 3d713e0e382e6fcfb4bba1501645b66c129ad60b < 2b38efc05bf7a8568ec74bfffea0f5cfa62bc01d`
- `Linux 3.17`

## Remediation

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