CVE-2026-102730

State: Published
Severity: 8.6 High
Published: Sep 29, 2026
Updated: Sep 29, 2026
Reserved: Sep 29, 2026

Description

Mounting an attacker-controlled NAND flash image (`lx_nand_flash_open()`) triggers an unbounded out-of-bounds heap **write** in LevelX's NAND flash-translation-layer metadata parser that overwrites a driver function pointer in the control block, giving a demonstrated control-flow hijack — RIP set to a full 8-byte attacker-chosen value (register-verified). Two accompanying OOB reads. All reproduced verbatim under ASan at HEAD `9f1cfdc`. (The affected metadata-parser header states "Some portions generated by Copilot (Sonnet 4.6)" — an AI-generated parser with an unchecked on-flash count.)

Scores

CVSS	Score	Vector	Source
4.0	8.6 High	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	eclipse

Weaknesses

CWE-787 Out-of-bounds Write
CWE-1284 Improper Validation of Specified Quantity in Input

Affected Products

Product	Versions
eclipse-threadx/levelx(NAND driver)Eclipse Foundation	HEAD `9f1cfdc` and prior; Finding 1 introduced by commit `47b2a17d`; Finding 2 is the un-patched half of the Nov-2025 fix `0f7dd521`.Affected

References

https://github.com/eclipse-threadx/levelx/security/advisories/GHSA-q6ph-7238-777g

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