---
id: CVE-2026-98211
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  mmc: mmci: Fix use-after-free in busy-timeout work

  ux500_busy_complete() can queue ux500_busy_timeout_work for an R1b
  command, but mmci_remove() never cancels it
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  mmc: mmci: Fix use-after-free in busy-timeout work

  ux500_busy_complete() can queue ux500_busy_timeout_work for an R1b
  command, but mmci_remove() never cancels it. The …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= b1a665932dc23cad0b8af2745cd9713f9e930d63 <
    af6fbf72e899932f330c4e5d0b84d985c922c633
  - >-
    Linux >= b1a665932dc23cad0b8af2745cd9713f9e930d63 <
    7fecf79f31568de161be14911db10d1251617b01
  - >-
    Linux >= b1a665932dc23cad0b8af2745cd9713f9e930d63 <
    432b98c1f5daecf04a33c8e1688d26e7ac221e23
  - >-
    Linux >= b1a665932dc23cad0b8af2745cd9713f9e930d63 <
    2b19cf3e50cddaff07b657dae1a8f30f06032852
  - Linux 6.5
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:18:07.497'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98211'
references:
  - url: 'https://git.kernel.org/stable/c/2b19cf3e50cddaff07b657dae1a8f30f06032852'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/432b98c1f5daecf04a33c8e1688d26e7ac221e23'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7fecf79f31568de161be14911db10d1251617b01'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/af6fbf72e899932f330c4e5d0b84d985c922c633'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T08:50:17.443Z'
---

## Overview

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

mmc: mmci: Fix use-after-free in busy-timeout work

ux500_busy_complete() can queue ux500_busy_timeout_work for an R1b
command, but mmci_remove() never cancels it. The work can subsequently
dereference the devm-allocated mmci_host after it has been released.

Mask the controller interrupts and disable the delayed work during
removal. This drains any queued instance and stops an IRQ handler that
is still in progress from queueing the work again once it has been
disabled.

This issue was found by an in-house static analysis tool.

## Remediation

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