Description
Incorrect authorization in the Arm Cortex-R82 (Armv8-R AArch64) MPU port in FreeRTOS-Kernel V11.3.0 and V11.3.1 might allow an unprivileged task on MPU-enabled builds to read and write privileged kernel memory outside the regions assigned to it, via a buffer argument passed to an MPU system call.
To remediate this issue, users should upgrade to version V11.3.2 or later.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreeRTOS | FreeRTOS-Kernel | 11.3.0 – ≤ 11.3.1 | — |
References
- https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.2 release-notes patch
- https://aws.amazon.com/security/security-bulletins/2026-138-aws/ vendor-advisory
- https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-pv9j-rq42-3fjc third-party-advisory