CVE-2026-95109

CVE-2026-95109 · Cortex-A7 module data validation checks only the first address of a caller-supplied range

This page contains facts from public vulnerability sources. Check the original advisory before updating.

The Cortex-A7 MMU Modules port validates a caller-supplied buffer by translating **one address** — the first byte. The common Module Manager hands its range check the module instance, the start address and the complete byte size; the Cortex-A7 implementation discarded the instance and the size and asked the MMU a single question about the start. A memory-protected module therefore passed any range whose first byte was user-readable, however far the rest of it reached. Privileged dispatch code then read or wrote the whole range. Because every protected-module dispatcher that consumes a buffer or an extra-parameter array goes through this one macro, the defect is not in any individual service: it is in the primitive all of them rely on.

CVSS 8.5 · High · EPSS 0.1%

Published

2026-10-20T15:17:20.023Z

Updated

2026-10-20T17:07:15.973Z

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