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CVE-2026-89885

8.4 · HIGH

In the Linux kernel, the following vulnerability has been resolved: media: platform: mtk-mdp3: Fix SCP device refcounting mdp_probe() first tries to get the SCP handle with scp_get().

Published Sep 16, 2026EPSS 0.20%

Overview

CVE-2026-89885 is a high-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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

media: platform: mtk-mdp3: Fix SCP device refcounting

mdp_probe() first tries to get the SCP handle with scp_get(). When that

fails, it falls back to looking up the SCP platform device with

__get_pdev_by_id() and then reads its driver data.

The fallback lookup returns the platform device with a reference, just

like scp_get() does. However, the fallback path currently drops that

reference immediately after platform_get_drvdata(). The driver later

still calls scp_put(mdp->scp) unconditionally from the probe error path

and from mdp_video_device_release(), which drops the SCP device

reference again.

Keep the fallback reference until the existing scp_put() call, so that

the fallback path follows the same ownership rules as the scp_get()

path.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/0259ade4c4ceaf1e184a7c1aea8071ad398f9b6fRefgit.kernel.org/stable/c/252850653569fdb1a259937e02325cf32c8f0970Refgit.kernel.org/stable/c/55793e4665b7f15151e6f5ab51ca980e73abed5dRefgit.kernel.org/stable/c/dce13bd9bade3ecc1acb7579397f24743850997f

How CyberStrike helps

Frequently asked questions

What is CVE-2026-89885?

CVE-2026-89885 is a high-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

How severe is CVE-2026-89885?

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-89885?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-89885?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-89885 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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