Mounting an attacker-controlled FAT image with fault tolerance enabled causes an out-of-bounds heap write during log replay. The write is attacker-positioned and attacker-valued, and on a common embedded memory layout it reaches the FX_MEDIA driver callback, giving control of the instruction pointer.
History

Tue, 20 Oct 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Eclipse
Eclipse threadx Filex
Vendors & Products Eclipse
Eclipse threadx Filex

Tue, 20 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 20 Oct 2026 13:45:00 +0000

Type Values Removed Values Added
Description Mounting an attacker-controlled FAT image with fault tolerance enabled causes an out-of-bounds heap write during log replay. The write is attacker-positioned and attacker-valued, and on a common embedded memory layout it reaches the FX_MEDIA driver callback, giving control of the instruction pointer.
Title FileX fault-tolerant log replay writes past the destination sector when mounting a crafted FAT image
Weaknesses CWE-1284
CWE-787
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published: 2026-10-20T13:10:14.903Z

Updated: 2026-10-20T15:30:22.550Z

Reserved: 2026-09-23T13:42:24.320Z

Link: CVE-2026-91041

cve-icon Vulnrichment

Updated: 2026-10-20T15:29:47.151Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T14:17:04.350

Modified: 2026-10-20T19:48:50.250

Link: CVE-2026-91041

cve-icon Redhat

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