Missing queue-set type validation in the queue-set selection system call in FreeRTOS-Kernel before V11.3.3 on MPU-enabled ports with queue sets enabled allows a local unprivileged task to write actor-controlled data beyond a pointer-sized object on the privileged kernel stack, affecting privileged memory across the MPU isolation boundary. To remediate this issue, users should upgrade to FreeRTOS-Kernel V11.3.3, rebuild, and reflash affected firmware. Builds that do not enable queue sets are not affected.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.3 release-notes, patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.2 · freertosNVD modified 2026-10-30 17:36
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 3
- https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.3 release-notes, patch
- https://aws.amazon.com/security/security-bulletins/2026-158-aws/ vendor-advisory
- https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-56j9-g43f-8g6v third-party-advisory