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CVE-2026-31759

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: usb: ulpi: fix double free in ulpi_register_interface() error path When device_register() fails, ulpi_register() calls put_devi…

Published May 1, 2026CWE-415EPSS 0.18%

Overview

CVE-2026-31759 is a high-severity vulnerability. It was published on May 1, 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:

usb: ulpi: fix double free in ulpi_register_interface() error path

When device_register() fails, ulpi_register() calls put_device() on

ulpi->dev.

The device release callback ulpi_dev_release() drops the OF node

reference and frees ulpi, but the current error path in

ulpi_register_interface() then calls kfree(ulpi) again, causing a

double free.

Let put_device() handle the cleanup through ulpi_dev_release() and

avoid freeing ulpi again in ulpi_register_interface().

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/01af542392b5d41fd659d487015a71f627accce3Refgit.kernel.org/stable/c/272a9b26c336a295e4e209157fed809706c1b1f7Refgit.kernel.org/stable/c/2f70ba9dae13a190673cc3f9b4aad52179738f60Refgit.kernel.org/stable/c/38c28fe25611099230f0965c925499bfcf46a795Refgit.kernel.org/stable/c/8763f8317bb389aded32a32b08f6751cfff657d2Refgit.kernel.org/stable/c/a6e5461f076c2ef63159f18e5cdbd30b50f0bc15Refgit.kernel.org/stable/c/aaeae6533d77e6ed4def85baec01e2815ebbef61Refgit.kernel.org/stable/c/ee248e6e941e4f2e634df2bd43e5f1ef810ab6df

How CyberStrike helps

Frequently asked questions

What is CVE-2026-31759?

CVE-2026-31759 is a high-severity vulnerability. It was published on May 1, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-31759?

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-2026-31759?

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-2026-31759?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-31759 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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