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CVE-2026-89890

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: media: go7007: defer the ALSA v4l2 put until card release go7007_snd_init() already takes a v4l2_device reference for the ALSA…

Published Sep 16, 2026EPSS 0.17%

Overview

CVE-2026-89890 is a high-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

media: go7007: defer the ALSA v4l2 put until card release

go7007_snd_init() already takes a v4l2_device reference for the ALSA

side, but go7007_snd_remove() drops it immediately after calling

snd_card_free_when_closed().

That is too early when a userspace process still has the capture PCM open.

The ALSA card and its PCM callbacks remain alive until the last file is

closed, so the release path can still reach struct go7007 through

pcm->private_data and call go7007_snd_hw_free() after the V4L2 release path

has freed the object.

Move the matching v4l2_device_put() to the ALSA card private_free callback

so the existing ALSA reference covers the whole deferred card lifetime.

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/0745a59945d927652d892437f9647ed6e87c0677Refgit.kernel.org/stable/c/1bd456afeb8a515137e567967069fce6f8fcd23eRefgit.kernel.org/stable/c/1c57d1a3396b2d767d58f10dff09bb397586c714Refgit.kernel.org/stable/c/1c9fdd9465211432d5c0ff70caaec0be245823d5Refgit.kernel.org/stable/c/29fe4d38fb59ec28ca656cb2dabc2b0f78e78980Refgit.kernel.org/stable/c/9c4f9628b8558c87903492a777834cc5be14ded3Refgit.kernel.org/stable/c/b7a0de398ad510426db9c8e96c516ef7abf48b0eRefgit.kernel.org/stable/c/e6f1a1ac9b8ccabfec548aef0d0d93eaf4dba4f4

How CyberStrike helps

Frequently asked questions

What is CVE-2026-89890?

CVE-2026-89890 is a high-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-89890?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-89890?

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-2026-89890?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-89890 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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