CVE-2026-109588 (GCVE-0-2026-109588)

Vulnerability from cvelistv5 – Published: 2026-10-16 17:09 – Updated: 2026-10-16 17:18
VLAI
Title
Numeric truncation in the MPU buffer authorization check in FreeRTOS-Kernel
Summary
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.
Severity
8.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
9.3 (Critical)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CWE
Assigner
AMZN CNA under the mitre root
CNA scorecard A 94/100 over 140 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
FreeRTOS FreeRTOS-Kernel Affected: 11.3.0 , ≤ 11.3.1 (custom)
    cpe:2.3:a:freertos:freertos-kernel:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Ada Logics Ltd Anthropic
Show details on NVD website
To clipboard 

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