8.8
High
CVE-2026-109588 Numeric truncation of the buffer length in the MPU buffer authorization check in FreeRTOS-Kernel V11.3.0 and V11.3.1…
Description
Numeric truncation of the buffer length in the MPU buffer authorization check in FreeRTOS-Kernel V11.3.0 and V11.3.1 on the Arm Cortex-R82 (Armv8-R AArch64) MPU port might allow, under certain conditions, an unprivileged task on MPU-enabled builds to read or write privileged kernel memory beyond the validated buffer window, via a stream buffer system call. To remediate this issue, users should upgrade to version V11.3.2 or later.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| FreeRTOS-Kernel 11.3 | 11.3.0 → 11.3.1 | No fix stated |
Other CVEs of FreeRTOS-Kernel
The 8 CVEs of FreeRTOS-Kernel →
CVE-2026-119086
Missing queue-set type validation in the queue-set selection system call in FreeRTOS-Kernel before V11.3.3 on…
6.5
Medium
CVE-2026-109587
Incorrect authorization in the Arm Cortex-R82 (Armv8-R AArch64) MPU port in FreeRTOS-Kernel V11.3.0 and V11.3.1 might…
8.8
High
CVE-2026-77237
Missing queue-set type validation in xQueueAddToSet() in the FreeRTOS-Kernel before 11.3.1 might allow an unprivileged…
6.5
Medium
CVE-2026-77236
Missing minimum size validation in secure context allocation in FreeRTOS-Kernel before 11.3.1 might allow local users to…
7.3
High