CVE-2026-109588

HIGH Status: Received

CVSS Scores

CVSS v3.x Base Score
8.8
HIGH

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.

Published
October 16, 2026 6:17 PM
Last Modified
October 16, 2026 6:17 PM
Source
ff89ba41-3aa1-4d27-914a-91399e9639e5

Weaknesses (CWE)

CWE-125 CWE-197 CWE-787

References

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