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CVE-2026-31755

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: gadget: fix NULL pointer dereference in ep_queue When the gadget endpoint is disabled or not yet configured, the ep…

Published May 1, 2026CWE-476EPSS 0.16%

Overview

CVE-2026-31755 is a medium-severity vulnerability. It was published on May 1, 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:

usb: cdns3: gadget: fix NULL pointer dereference in ep_queue

When the gadget endpoint is disabled or not yet configured, the ep->desc

pointer can be NULL. This leads to a NULL pointer dereference when

__cdns3_gadget_ep_queue() is called, causing a kernel crash.

Add a check to return -ESHUTDOWN if ep->desc is NULL, which is the

standard return code for unconfigured endpoints.

This prevents potential crashes when ep_queue is called on endpoints

that are not ready.

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/14bf08ab2cdfcdfd3f13e799d06692a1b3e0745fRefgit.kernel.org/stable/c/390536cc6af4ca5566bc3bf1f8b704700380cd2cRefgit.kernel.org/stable/c/3cf0580a09d417eab41ce914a11f9cde3a121871Refgit.kernel.org/stable/c/3d1433fe34b224b90259e207e5389e95b504ef04Refgit.kernel.org/stable/c/7f6f127b9bc34bed35f56faf7ecb1561d6b39000Refgit.kernel.org/stable/c/9ab9b0e5fcdac325f950fc8b6caa08a9e22a0db9Refgit.kernel.org/stable/c/d61446dfc9d387775bb1b95b081953201b9222afRefgit.kernel.org/stable/c/fb2ad0c1334a3eccfe4ed203f9eef5a4879226f6

How CyberStrike helps

Frequently asked questions

What is CVE-2026-31755?

CVE-2026-31755 is a medium-severity vulnerability. It was published on May 1, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-31755?

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-2026-31755?

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-2026-31755?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-31755 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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