---
id: CVE-2026-64358
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: mtk-jpeg: cancel workqueue on release for supported platforms only

  Since a recent fix the mtk_jpeg_release function cancels any pending
  or running work present …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: mtk-jpeg: cancel workqueue on release for supported platforms only

  Since a recent fix the mtk_jpeg_release function cancels any pending
  or running work present …
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-476
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 6.6.140, < 6.6.145'
  - 'linux_kernel >= 6.12.86, < 6.12.96'
  - 'linux_kernel >= 6.18.27, < 6.18.39'
  - 'linux_kernel >= 7.0.4, < 7.1.4'
patched:
  - linux_kernel 7.1.4
published: '2026-07-25'
updated: '2026-09-04'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-64358'
references:
  - url: 'https://git.kernel.org/stable/c/0fed0fc34ce734b4b8c2f6a467d38bddcb21dda9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4c4b4af4a9f278da096f0dbdb6b59594701d29bf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/973408ceab14555a8548b97c8cc7b54208c3f251'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ac0774961a6ea174a71d4ffa39966edafbf7662d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b1845a227fda37b2fe5327df3ca0015d7e290235'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00122
epssPercentile: 0.02269
ingestedAt: '2026-09-05T13:39:56.799Z'
---

## Overview

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

media: mtk-jpeg: cancel workqueue on release for supported platforms only

Since a recent fix the mtk_jpeg_release function cancels any pending
or running work present in the driver workqueue using
cancel_work_sync function.
Currently, only the multicore based variants use this workqueue and they
have the jpeg_worker platform data field initialized with a workqueue
callback function. For the others, this field value remain NULL by
default.
The cancel_work_sync function is unconditionally called in
mtk_jpeg_release function, even for the variants that do not use the
workqueue. This call generates a WARN_ON print in __flush_work because
the workqueue callback function presence check fails in __flush_work
function (used by cancel_work_sync).

So, to avoid these warnings, call cancel_work_sync only if a workqueue
callback is defined in platform data.

## Affected

- `linux_kernel >= 6.6.140, < 6.6.145`
- `linux_kernel >= 6.12.86, < 6.12.96`
- `linux_kernel >= 6.18.27, < 6.18.39`
- `linux_kernel >= 7.0.4, < 7.1.4`

## Remediation

Upgrade past the affected range:

- `linux_kernel 7.1.4`