---
id: CVE-2026-93821
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

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

  PCI: altera: 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 resc…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    c0cd65906e5f7e293ef2568c9524cc0a918333c3
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    7cbb8f2750d91e64caff89e164ac8280bb80bedc
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    a8759c8ac48c0419f5899e95a6ffc611b07c965b
  - Linux < 6.12.111
  - Linux < 6.18.53
  - Linux (all versions)
published: '2026-09-24'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T13:17:22.957'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93821'
references:
  - url: 'https://git.kernel.org/stable/c/7cbb8f2750d91e64caff89e164ac8280bb80bedc'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a8759c8ac48c0419f5899e95a6ffc611b07c965b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c0cd65906e5f7e293ef2568c9524cc0a918333c3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T16:47:15.892Z'
epss: 0.00166
epssPercentile: 0.05177
---

## Overview

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

PCI: altera: 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.