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.
History

Mon, 27 Oct 2025 14:00:00 +0000

Type Values Removed Values Added
First Time appeared Eclipse
Eclipse threadx Usbx
CPEs cpe:2.3:o:microsoft:azure_rtos_usbx:*:*:*:*:*:*:*:* cpe:2.3:a:eclipse:threadx_usbx:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft azure Rtos Usbx
Eclipse
Eclipse threadx Usbx

Wed, 23 Apr 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2022-05-24T14:25:10.000Z

Updated: 2025-04-23T18:22:28.758Z

Reserved: 2022-04-13T00:00:00.000Z

Link: CVE-2022-29223

cve-icon Vulnrichment

Updated: 2024-08-03T06:17:54.276Z

cve-icon NVD

Status : Modified

Published: 2022-05-24T15:15:07.977

Modified: 2025-10-27T13:57:06.663

Link: CVE-2022-29223

cve-icon Redhat

No data.