CVE-2025-55095

The function _ux_host_class_storage_media_mount() is responsible for mounting partitions on a USB mass storage device. When it encounters an extended partition entry in the partition table, it recursively calls itself to mount the next logical partition. This recursion occurs in _ux_host_class_storage_partition_read(), which parses up to four partition entries. If an extended partition is found (with type UX_HOST_CLASS_STORAGE_PARTITION_EXTENDED or EXTENDED_LBA_MAPPED), the code invokes: _ux_host_class_storage_media_mount(storage, sector + _ux_utility_long_get(...)); There is no limit on the recursion depth or tracking of visited sectors. As a result, a malicious or malformed disk image can include cyclic or excessively deep chains of extended partitions, causing the function to recurse until stack overflow occurs.

CVSS v3 4.2 MEDIUM

4.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 3.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/eclipse-threadx/usbx/security/advisories/GHSA-qfmp-wch9-rpv2	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:eclipse:threadx_usbx:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-01-27 16:16

Updated : 2026-06-17 09:41

NVD link : CVE-2025-55095

Mitre link : CVE-2025-55095

CVE.ORG link : CVE-2025-55095

JSON object : View

Products Affected

eclipse

threadx_usbx

CWE

CWE-121

Stack-based Buffer Overflow

CWE-674

Uncontrolled Recursion

CWE-787

Out-of-bounds Write

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