CVE-2026-95109
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.
- Score
- CVSS 4.0 8.5 High
- Status
- Awaiting Analysis - emo@eclipse.org
- Published
- 2026-10-20
- Last modified
- 2026-10-20
- Weaknesses
- CWE-125, CWE-787
Affected products
References
- https://github.com/eclipse-threadx/threadx/security/advisories/GHSA-fvp6-37q5-c648
