CVE-2026-77236

High

Open

TLP:CLEAR

Missing size validation in SecureContext_AllocateContext in FreeRTOS-Kernel

NVD CVE.org

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Description

Missing minimum size validation in secure context allocation in FreeRTOS-Kernel before 11.3.1 might allow local users to corrupt secure-world heap metadata via an out-of-bounds write with an undersized stack size parameter. To remediate this issue, users should upgrade to version 11.3.1 or later.

Details

CVSS Score: 7.3
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
Confidence: 90%
Published: Aug 21, 2026
Last Modified: Aug 21, 2026

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