CVE-2025-55095

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Summary

CVECVE-2025-55095
StatePUBLISHED
Assignereclipse
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-01-27 16:16:14 UTC
Updated2026-04-02 20:28:48 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 7 HIGH from [email protected]

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.000150000 probability, percentile 0.028430000 (date 2026-04-02)

Problem Types: CWE-121 | CWE-674 | CWE-787 | CWE-121 CWE-121 Stack-based Buffer Overflow | CWE-674 CWE-674 Uncontrolled Recursion

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary4.2MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
3.1CNACVSS4.2MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Eclipse Threadx Usbx All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Eclipse Foundation Eclipse ThreadX - USBX affected 6.4.2 semver Not specified

References

ReferenceSourceLinkTags
github.com/eclipse-threadx/usbx/security/advisories/GHSA-qfmp-wch9-rpv2 [email protected] github.com Exploit, Vendor Advisory
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