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    Dashboard / CVE / CVE-2022-29223

    CVE-2022-29223

    Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack. In versions prior to 6.1.10, an attacker can cause a buffer overflow by providing the Azure RTOS USBX host stack a HUB descriptor with `bNbPorts` set to a value greater than `UX_MAX_TT` which defaults to 8. For a `bNbPorts` value of 255, the implementation of `ux_host_class_hub_descriptor_get` function will modify the contents of `hub` -> `ux_host_class_hub_device` -> `ux_device_hub_tt` array violating the end boundary by 255 - `UX_MAX_TT` items. The USB host stack needs to validate the number of ports reported by the hub, and if the value is larger than UX_MAX_TT, USB stack needs to reject the request. This fix has been included in USBX release 6.1.10.

    Published:May 24, 2022
    Last Modified:Oct 27, 2025
    EPS:May 24, 2022
    EPSS Score:0.05351
    CVSS Score:7.5

    Affected Products

    Vendor
    Eclipse
    Product
    Threadx Usbx

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2025-55097 (CVSS 2.4) — In USBX before 6.4.3, the USB support module for Eclipse Foundation ThreadX, there was a potential out of boun…
    CVE-2025-55096 (CVSS 2.1) — In USBX before 6.4.3, the USB support module for Eclipse Foundation ThreadX, there was a potential out of boun…
    CVE-2023-48698 (CVSS 6.8) — Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure…
    CVE-2023-48697 (CVSS 6.4) — Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure…
    CVE-2023-48696 (CVSS 6.7) — Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure…
    CVE-2023-48695 (CVSS 7.3) — Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High