CVE-2026-109587Incorrect authorization in the Arm Cortex-R82 MPU port in FreeRTOS-Kernel

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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.2 release-notespatch
• 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