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CVE-2026-46073

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: hwmon: (powerz) Fix missing usb_kill_urb() on signal interrupt wait_for_completion_interruptible_timeout() returns -ERESTARTSYS…

Published May 27, 2026EPSS 0.16%

Overview

CVE-2026-46073 is a medium-severity vulnerability. It was published on May 27, 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:

hwmon: (powerz) Fix missing usb_kill_urb() on signal interrupt

wait_for_completion_interruptible_timeout() returns -ERESTARTSYS when

interrupted. This needs to abort the URB and return an error. No data

has been received from the device so any reads from the transfer

buffer are invalid.

The original code tests !ret, which only catches the timeout case (0).

On signal delivery (-ERESTARTSYS), !ret is false so the function skips

usb_kill_urb() and falls through to read from the unfilled transfer

buffer.

Fix by capturing the return value into a long (matching the function

return type) and handling signal (negative) and timeout (zero) cases

with separate checks that both call usb_kill_urb() before returning.

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/8b51277eec433d4e724b273a5a5c64e8acfbe405Refgit.kernel.org/stable/c/b66437cb20a2d9ef201f40b675569f8ea7787c9fRefgit.kernel.org/stable/c/b6cb07f02253bdefd2339e57eaa1428a7b28cd0fRefgit.kernel.org/stable/c/d64458784036f5818e22781254b6be299d52a19c

How CyberStrike helps

Frequently asked questions

What is CVE-2026-46073?

CVE-2026-46073 is a medium-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-46073?

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-2026-46073?

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-2026-46073?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-46073 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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