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CVE-2026-74313

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: vduse: hold vduse_lock across IDR lookup in open path vduse_dev_open() looks up struct vduse_dev through the IDR and then acqui…

Published Aug 15, 2026EPSS 0.17%

Overview

CVE-2026-74313 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, 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:

vduse: hold vduse_lock across IDR lookup in open path

vduse_dev_open() looks up struct vduse_dev through the IDR and then

acquires dev->lock only after vduse_lock has been dropped.

This leaves a window where a concurrent VDUSE_DESTROY_DEV can remove the

same object from the IDR and free it before the open path locks the

device, leading to a use-after-free.

Close this race by keeping vduse_lock held until dev->lock has been

acquired in the open path, matching the lock ordering already used by

the destroy 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/35483c5306e09b3190ff937089d404a78012695cRefgit.kernel.org/stable/c/5c1560be8aa6849356455af67518d35c551cbd95Refgit.kernel.org/stable/c/79e12c891940b0c4c75881b7fd82a8cbb8ac97beRefgit.kernel.org/stable/c/93ed4692f2299a40346025979f40e4a9b7b33af7Refgit.kernel.org/stable/c/a2d0a57538fd0b3b3ab75d64bb64f4cd2fab13a2Refgit.kernel.org/stable/c/d94e2947203aead590fd63f667d316d4475d65afRefgit.kernel.org/stable/c/e440e077748939839d9f76e24383b76b785f80ce

How CyberStrike helps

Frequently asked questions

What is CVE-2026-74313?

CVE-2026-74313 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-74313?

This vulnerability has a CVSS 3.1 base score of 8.8, 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-2026-74313?

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-2026-74313?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-74313 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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