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CVE-2026-74458

In the Linux kernel, the following vulnerability has been resolved: can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents The wait and bulk receive paths walk variab…

Published Aug 15, 2026EPSS 0.18%

Overview

CVE-2026-74458 is a known-severity vulnerability. It was published on August 15, 2026.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents

The wait and bulk receive paths walk variable-length commands from a

USB buffer. A nonzero command shorter than CMD_HEADER_LEN can still be

dispatched, and the wait path copies a matching command into a fixed

caller-owned struct kvaser_cmd using the device-provided length.

Reject nonzero commands that do not contain the fixed header or that

extend beyond the current USB buffer item. In the wait path, also reject

a matching command that exceeds the destination before copying it.

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/0293dd153f9dbc1ddf5dacdccc76b363bce4a8eeRefgit.kernel.org/stable/c/185cb1fa38142a3cbf223dd8b3abb24217f330d3Refgit.kernel.org/stable/c/21f0465fd86d77794aaed8e05f833634f68d178dRefgit.kernel.org/stable/c/3d0897ec623e422695d70d80ae456f89476c5328Refgit.kernel.org/stable/c/695aea154bb2d453e6daada1510972fafd075285Refgit.kernel.org/stable/c/72f96c2942f11a0ae8663adcb3d9ee986e07d4faRefgit.kernel.org/stable/c/c00ec53d7dec08134e97071850cc00ef000c5b77Refgit.kernel.org/stable/c/d9e91672526ffa279709b15490118aea1bdee714

How CyberStrike helps

Frequently asked questions

What is CVE-2026-74458?

CVE-2026-74458 is a known-severity vulnerability. It was published on August 15, 2026.

How severe is CVE-2026-74458?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-74458?

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-2026-74458?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-74458 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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