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CVE-2026-43181

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: gpio: sysfs: fix chip removal with GPIOs exported over sysfs Currently if we export a GPIO over sysfs and unbind the parent GPI…

Published May 6, 2026EPSS 0.16%

Overview

CVE-2026-43181 is a medium-severity vulnerability. It was published on May 6, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

gpio: sysfs: fix chip removal with GPIOs exported over sysfs

Currently if we export a GPIO over sysfs and unbind the parent GPIO

controller, the exported attribute will remain under /sys/class/gpio

because once we remove the parent device, we can no longer associate the

descriptor with it in gpiod_unexport() and never drop the final

reference.

Rework the teardown code: provide an unlocked variant of

gpiod_unexport() and remove all exported GPIOs with the sysfs_lock taken

before unregistering the parent device itself. This is done to prevent

any new exports happening before we unregister the device completely.

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/54f463494eb5bf193ef7d904a493474c451734dfRefgit.kernel.org/stable/c/6766f59012301f1bf3f46c6e7149caca45d92309Refgit.kernel.org/stable/c/a645cc25904b0baf508b77a0402ce151212b9800

How CyberStrike helps

Frequently asked questions

What is CVE-2026-43181?

CVE-2026-43181 is a medium-severity vulnerability. It was published on May 6, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-43181?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-43181?

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-2026-43181?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-43181 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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