---
id: CVE-2026-98213
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  mmc: core: Cancel SDIO IRQ work before freeing host

  A host controller that uses sdio_signal_irq() schedules host->sdio_irq_work
  from its interrupt handler
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  mmc: core: Cancel SDIO IRQ work before freeing host

  A host controller that uses sdio_signal_irq() schedules host->sdio_irq_work
  from its interrupt handler.  That work …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 682696605c7093d2800c498c04166831e5aedf87 <
    bae1cf4f9902b2065bd78b759c7fe6312855f05e
  - >-
    Linux >= 682696605c7093d2800c498c04166831e5aedf87 <
    0bf3d168a2cc20b120d6b50f0a8ac5b40ff4d589
  - >-
    Linux >= 682696605c7093d2800c498c04166831e5aedf87 <
    1d6e7315ee1c992b4ca42c9b11c5ed0e925a00e0
  - >-
    Linux >= 682696605c7093d2800c498c04166831e5aedf87 <
    4553b5004eca9c9eae29a421f1a9c4d5db2c9114
  - >-
    Linux >= 682696605c7093d2800c498c04166831e5aedf87 <
    2a863458828ade0671c2bc2e469bbd7f2340eb03
  - >-
    Linux >= 682696605c7093d2800c498c04166831e5aedf87 <
    6feadbecdae60a6324c967f3b1493741083793a3
  - Linux 4.13
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:18:07.770'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98213'
references:
  - url: 'https://git.kernel.org/stable/c/0bf3d168a2cc20b120d6b50f0a8ac5b40ff4d589'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/1d6e7315ee1c992b4ca42c9b11c5ed0e925a00e0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2a863458828ade0671c2bc2e469bbd7f2340eb03'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4553b5004eca9c9eae29a421f1a9c4d5db2c9114'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6feadbecdae60a6324c967f3b1493741083793a3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bae1cf4f9902b2065bd78b759c7fe6312855f05e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T08:50:17.442Z'
---

## Overview

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

mmc: core: Cancel SDIO IRQ work before freeing host

A host controller that uses sdio_signal_irq() schedules host->sdio_irq_work
from its interrupt handler.  That work is only cancelled on the suspend
path (mmc_sdio_suspend()), not on the remove/free path, so a worker armed
just before the controller freed its IRQ can run after
mmc_host_classdev_release() has freed the host and dereference it through
container_of().

Cancel host->sdio_irq_work in mmc_free_host(), like the existing
host->detect drain added by commit 1036f69e2513 ("mmc: core: Cancel
delayed work before releasing host").

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.