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CVE-2026-93236
media: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common
Overview
Description

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.

Details
INFO

Published Date :

Sept. 24, 2026, 4:17 p.m.

Last Modified :

Sept. 24, 2026, 4:17 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-93236 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Apply kernel patches to fix a NULL pointer dereference in the media subsystem.
  • Update the Linux kernel to the patched version.
  • Verify the patch addresses the NULL pointer dereference.
  • Test the media subsystem functionality.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-93236.

URL Resource
https://git.kernel.org/stable/c/20aa934ace6917262ff579a73ec018d06a7bad1c
https://git.kernel.org/stable/c/276f28672bb6d5d5feca78db4219c7b5adf1be26
https://git.kernel.org/stable/c/3839b6be2279fc4f558723f2c0fbfc9c42070958
https://git.kernel.org/stable/c/680a89683197cdfe4e03e6fd7755454c647d39c1
https://git.kernel.org/stable/c/96dafbae77f50bfe2228bcfedcd8652c5e5f08e8
https://git.kernel.org/stable/c/c620906fb1b2ad75d408ea9d06040d66952d4a31
https://git.kernel.org/stable/c/d61ba609c3226af3c84268ba606ea06ee63e511b
https://git.kernel.org/stable/c/f2375a308640e401c142c5426d52c3d10e016d25
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-93236 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-93236 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-93236 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-93236 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Sep. 24, 2026

    Action Type Old Value New Value
    Added Description 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.
    Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/93xxx/CVE-2026-93236.json">CVE-2026-93236</a>
    Added Reference https://git.kernel.org/stable/c/20aa934ace6917262ff579a73ec018d06a7bad1c
    Added Reference https://git.kernel.org/stable/c/276f28672bb6d5d5feca78db4219c7b5adf1be26
    Added Reference https://git.kernel.org/stable/c/3839b6be2279fc4f558723f2c0fbfc9c42070958
    Added Reference https://git.kernel.org/stable/c/680a89683197cdfe4e03e6fd7755454c647d39c1
    Added Reference https://git.kernel.org/stable/c/96dafbae77f50bfe2228bcfedcd8652c5e5f08e8
    Added Reference https://git.kernel.org/stable/c/c620906fb1b2ad75d408ea9d06040d66952d4a31
    Added Reference https://git.kernel.org/stable/c/d61ba609c3226af3c84268ba606ea06ee63e511b
    Added Reference https://git.kernel.org/stable/c/f2375a308640e401c142c5426d52c3d10e016d25
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
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