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.
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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 |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: eclipse
Published:
Updated: 2026-10-20T15:30:22.550Z
Reserved: 2026-09-23T13:42:24.320Z
Link: CVE-2026-91041
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Status : Received
Published: 2026-10-20T14:17:04.350
Modified: 2026-10-20T14:17:04.350
Link: CVE-2026-91041
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