---
id: CVE-2026-93819
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  PCI: mediatek: Protect root bus removal with rescan lock

  Hold the pci_rescan_remove_lock lock while stopping and removing a root bus
  to avoid racing with concurrent re…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  PCI: mediatek: Protect root bus removal with rescan lock

  Hold the pci_rescan_remove_lock lock while stopping and removing a root bus
  to avoid racing with concurrent re…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 031337ace2d1c22a447da6390716fe92592cdd6e <
    d54417acb22d9e8bc404a8598330bc9729ee7146
  - >-
    Linux >= 031337ace2d1c22a447da6390716fe92592cdd6e <
    5dd379acfa38c516e904bcfa693502cd585a0bba
  - >-
    Linux >= 031337ace2d1c22a447da6390716fe92592cdd6e <
    8d910649725955435c6a807944108bca0570712d
  - >-
    Linux >= 031337ace2d1c22a447da6390716fe92592cdd6e <
    31e33dcc896527b3ad790fdc6aa6b8d2995c078b
  - >-
    Linux >= 031337ace2d1c22a447da6390716fe92592cdd6e <
    c57b971765f835138fa2fce3f2a171b004cbb114
  - >-
    Linux >= 031337ace2d1c22a447da6390716fe92592cdd6e <
    a568939487dcbc1a3e341208585e224be897e25e
  - >-
    Linux >= 031337ace2d1c22a447da6390716fe92592cdd6e <
    a29812a55da8d0dbeb071b26ac428c338e3fc389
  - Linux 4.20
published: '2026-09-24'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:17:51.670'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93819'
references:
  - url: 'https://git.kernel.org/stable/c/31e33dcc896527b3ad790fdc6aa6b8d2995c078b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5dd379acfa38c516e904bcfa693502cd585a0bba'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8d910649725955435c6a807944108bca0570712d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a29812a55da8d0dbeb071b26ac428c338e3fc389'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a568939487dcbc1a3e341208585e224be897e25e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c57b971765f835138fa2fce3f2a171b004cbb114'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d54417acb22d9e8bc404a8598330bc9729ee7146'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00173
epssPercentile: 0.06646
ingestedAt: '2026-09-24T16:47:15.893Z'
---

## Overview

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

PCI: mediatek: Protect root bus removal with rescan lock

Hold the pci_rescan_remove_lock lock while stopping and removing a root bus
to avoid racing with concurrent rescan or hotplug operations triggered via
sysfs.  Such races may lead to use-after-free issues or system crashes.

[bhelgaas: commit log]

## Remediation

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