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CVE-2026-72109

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net: sparx5: unregister blocking notifier on init failure sparx5_register_notifier_blocks() registers the switchdev blocking no…

Published Aug 15, 2026EPSS 0.16%

Overview

CVE-2026-72109 is a high-severity vulnerability. It was published on August 15, 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:

net: sparx5: unregister blocking notifier on init failure

sparx5_register_notifier_blocks() registers the switchdev blocking

notifier before allocating the ordered workqueue. If the workqueue

allocation fails, the error path unregisters the switchdev and netdevice

notifiers, but leaves the blocking notifier registered.

Add a separate error label for the workqueue allocation failure path and

unregister the switchdev blocking notifier there.

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/17f113e7b622dc850992ade540181717de6a8561Refgit.kernel.org/stable/c/483be61b4a9a6df3b7cb277e8f189e082dee4cb8Refgit.kernel.org/stable/c/8a3c44a003176282ee4306b7c96e5a536c6f0707Refgit.kernel.org/stable/c/cf419c869e0d03aad4b6f4ecf0a813851930dfe7Refgit.kernel.org/stable/c/d6084c47389fd6978a5d66b0d58206a548c792a9Refgit.kernel.org/stable/c/e5afc6d3fabdf1f605d63c4b34a3df6c359e81f3Refgit.kernel.org/stable/c/fbc65b17508ed5464b7106e7fa5f15251ca1b603

How CyberStrike helps

Frequently asked questions

What is CVE-2026-72109?

CVE-2026-72109 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-72109?

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-2026-72109?

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-2026-72109?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-72109 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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