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CVE-2026-31473

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: media: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mutex MEDIA_REQUEST_IOC_REINIT can run concurrently with VIDIOC_RE…

Published Apr 22, 2026CWE-416EPSS 0.17%

Overview

CVE-2026-31473 is a high-severity vulnerability. It was published on April 22, 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: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mutex

MEDIA_REQUEST_IOC_REINIT can run concurrently with VIDIOC_REQBUFS(0)

queue teardown paths. This can race request object cleanup against vb2

queue cancellation and lead to use-after-free reports.

We already serialize request queueing against STREAMON/OFF with

req_queue_mutex. Extend that serialization to REQBUFS, and also take

the same mutex in media_request_ioctl_reinit() so REINIT is in the

same exclusion domain.

This keeps request cleanup and queue cancellation from running in

parallel for request-capable devices.

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/1a0d9083c24fbd5d22f7100f09d11e4d696a5f01Refgit.kernel.org/stable/c/2c685e99efb3b3bd2b78699fba6b1cf321975db0Refgit.kernel.org/stable/c/331242998a7ade5c2f65e14988901614629f3db5Refgit.kernel.org/stable/c/585fd9a2063dacce8b2820f675ef23d5d17434c5Refgit.kernel.org/stable/c/72b9e81e0203f03c40f3adb457f55bd4c8eb112dRefgit.kernel.org/stable/c/bef4f4a88b73e4cc550d25f665b8a9952af22773Refgit.kernel.org/stable/c/cf2023e84f0888f96f4b65dc0804e7f3651969c1Refgit.kernel.org/stable/c/d8549a453d5bdc0a71de66ad47a1106703406a56

How CyberStrike helps

Frequently asked questions

What is CVE-2026-31473?

CVE-2026-31473 is a high-severity vulnerability. It was published on April 22, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-31473?

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-2026-31473?

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-2026-31473?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-31473 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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