---
id: CVE-2026-93818
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  PCI: plda: 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…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  PCI: plda: 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…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    105f212a21cc6bef6855841216dd476022626170
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    cb78a1d7a2787758a2d8e1182c346d4349f43260
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    4e4f9745f016c1631d00a4035b06f6e75d449e01
  - Linux < 6.12.111
  - Linux < 6.18.53
  - Linux (all versions)
published: '2026-09-24'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T13:17:22.683'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93818'
references:
  - url: 'https://git.kernel.org/stable/c/105f212a21cc6bef6855841216dd476022626170'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4e4f9745f016c1631d00a4035b06f6e75d449e01'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cb78a1d7a2787758a2d8e1182c346d4349f43260'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93818.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-93818'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2540550'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-93818'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93818'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93818.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-09-24T16:47:15.892Z'
epss: 0.00166
epssPercentile: 0.05792
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-366
---

## Overview

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

PCI: plda: 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.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93818.json)