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AWS Security BulletinsCVE-2026-119086

CVE-2026-119086 - Missing type validation in xQueueSelectFromSet in FreeRTOS-Kernel

Severity not listed 1 CVE Published Oct 30, 2026 at 5:39 PM UTC

Summary

Bulletin ID: 2026-158-AWS

Publication Date: 10/30/2026 10:30 AM PDT

Description:

FreeRTOS-Kernel is a real-time operating system kernel for microcontrollers and small microprocessors, distributed by Amazon. We identified CVE-2026-119086, the queue-set selection path does not fully validate that the referenced kernel object is a queue set before operating on it.

On MPU-enabled builds with queue sets enabled, an unprivileged task can cause the kernel to write beyond the intended destination while executing in a privileged context, which affects the integrity of privileged execution. Applications that are built without queue sets are not affected.

Impacted versions: >=V7.4.0 AND <=V11.3.2 (MPU-enabled ports with configUSE_QUEUE_SETS=1)

Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.

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Products covered

A separate affected-products list was not included in the collected bulletin.

Remediation

Separate remediation guidance was not included in the collected bulletin.

CVEs in this advisory 1

Updates

  1. Published by AWS

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.