CVE-2026-109588
Numeric truncation of the buffer length in the MPU buffer authorization check in FreeRTOS-Kernel…
- Risk score
- 53/100
- CVSS
- 8.8 v3.1
- Exploit chance (30 days)
- 0.1%
- Published
- 16 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 w…
- Affected
- See advisory
- Fix
- Upgrade the product to 11.3.2 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 8.8 high
References
Original 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.
Last activity 16 Oct 2026. Patch Forecast updates every hour.