CVEvulnerability

CVE-2025-55095

7.0 HIGH Published 2026-01-27 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-01-27
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.2 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
CVSS 3.1 ([email protected])
7.0 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-121, CWE-674, CWE-787

Description

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.

Affected configurations

• eclipse threadx usbx (<= 6.4.2)

Related

Weakness · CWE (3)

  • CWE-121 Stack-based Buffer Overflow weakness
  • CWE-674 Uncontrolled Recursion weakness
  • CWE-787 Out-of-bounds Write weakness

References