CVE-2026-96402USBX PIMA/MTP host class reads past its receive buffer when a device over-reports its object handle count

Description

A malicious USB MTP/PTP device can cause the USBX host to read past a heap buffer during ordinary object enumeration, leaking adjacent heap contents to the application or faulting on an unmapped page.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/eclipse-threadx/usbx/security/advisories/GHSA-2ch9-p8xv-fwp6