CVE-2026-77235

Missing privilege verification in the secure context cleanup handler in FreeRTOS-Kernel before 11.3.1 might allow local users to cause a use-after-free condition in secure-world memory via the SVC handler for secure context deallocation. To remediate this issue, users should upgrade to version 11.3.1 or later.

CVSS v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.0 / Impact : 4.7

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://aws.amazon.com/security/security-bulletins/2026-086-aws/	Vendor Advisory
https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.1	Release Notes
https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-55pf-q87x-c58c	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:amazon:freertos:*:*:*:*:*:*:*:*

History

14 Oct 2026, 19:10

Type	Values Removed	Values Added
Summary		(es) Falta de verificación de privilegios en el gestor de limpieza de contexto seguro en FreeRTOS-Kernel anterior a 11.3.1 podría permitir a usuarios locales causar una condición de uso después de liberación en la memoria del mundo seguro a través del gestor SVC para la desasignación de contexto seguro. Para remediar este problema, los usuarios deberían actualizar a la versión 11.3.1 o posterior.

Information

Published : 2026-08-21 18:16

Updated : 2026-10-14 19:10

NVD link : CVE-2026-77235

Mitre link : CVE-2026-77235

CVE.ORG link : CVE-2026-77235

JSON object : View

Products Affected

amazon

freertos

CWE

CWE-416

Use After Free

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