---
id: CVE-2026-93236
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common

  When VIDIOC_TRY_FMT is called with an unsupported pixel format on the
  OUTPUT queue, vdec_try_fmt_comm…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common

  When VIDIOC_TRY_FMT is called with an unsupported pixel format on the
  OUTPUT queue, vdec_try_fmt_comm…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 3e7f51bd96077acad6acd7b45668f65b44233c4e <
    276f28672bb6d5d5feca78db4219c7b5adf1be26
  - >-
    Linux >= 3e7f51bd96077acad6acd7b45668f65b44233c4e <
    c620906fb1b2ad75d408ea9d06040d66952d4a31
  - >-
    Linux >= 3e7f51bd96077acad6acd7b45668f65b44233c4e <
    3839b6be2279fc4f558723f2c0fbfc9c42070958
  - >-
    Linux >= 3e7f51bd96077acad6acd7b45668f65b44233c4e <
    680a89683197cdfe4e03e6fd7755454c647d39c1
  - >-
    Linux >= 3e7f51bd96077acad6acd7b45668f65b44233c4e <
    f2375a308640e401c142c5426d52c3d10e016d25
  - >-
    Linux >= 3e7f51bd96077acad6acd7b45668f65b44233c4e <
    96dafbae77f50bfe2228bcfedcd8652c5e5f08e8
  - >-
    Linux >= 3e7f51bd96077acad6acd7b45668f65b44233c4e <
    d61ba609c3226af3c84268ba606ea06ee63e511b
  - >-
    Linux >= 3e7f51bd96077acad6acd7b45668f65b44233c4e <
    20aa934ace6917262ff579a73ec018d06a7bad1c
  - Linux 5.3
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T16:17:19.297'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93236'
references:
  - url: 'https://git.kernel.org/stable/c/20aa934ace6917262ff579a73ec018d06a7bad1c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/276f28672bb6d5d5feca78db4219c7b5adf1be26'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3839b6be2279fc4f558723f2c0fbfc9c42070958'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/680a89683197cdfe4e03e6fd7755454c647d39c1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/96dafbae77f50bfe2228bcfedcd8652c5e5f08e8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c620906fb1b2ad75d408ea9d06040d66952d4a31'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d61ba609c3226af3c84268ba606ea06ee63e511b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f2375a308640e401c142c5426d52c3d10e016d25'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T15:45:56.659Z'
---

## Overview

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

media: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common

When VIDIOC_TRY_FMT is called with an unsupported pixel format on the
OUTPUT queue, vdec_try_fmt_common() falls back to V4L2_PIX_FMT_MPEG2.
However, if a distro has locally patched MPEG2 support out (as it has
been broken for some time) the platform format table does not contain
MPEG2 so find_format() returns NULL and the subsequent dereference of
fmt_out->max_width triggers a NULL pointer dereference.

Fix this by falling back to the first format in the platform's format
array instead of hardcoding V4L2_PIX_FMT_MPEG2. This is always valid
since every platform defines at least one format.

## Remediation

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