CVE-2026-96406

A VideoStreaming interface reports the size of its whole class-specific descriptor block in the `wTotalLength` field of its input header. The USBX host recorded that figure and used it as the budget for walking the format, frame and frame-interval descriptors, without holding it against the configuration descriptor actually received. A device that reports a `wTotalLength` larger than the descriptors it supplies therefore had its own claim believed. Once the real bytes ran out the walk kept going, dereferencing the cursor past the end of the configuration buffer, in the host's context, whenever the application queried format or frame data.

CVSS v3 4.9 MEDIUM

4.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.7 / Impact : 4.2

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/eclipse-threadx/usbx/security/advisories/GHSA-8qf6-hjvf-g68f

Configurations

No configuration.

History

20 Oct 2026, 14:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-20 14:17

Updated : 2026-10-20 19:48

NVD link : CVE-2026-96406

Mitre link : CVE-2026-96406

CVE.ORG link : CVE-2026-96406

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

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