SB20261109153 - Type Confusion in FreeRTOS

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Main Vulnerability Database SB20261109153

SB20261109153 - Type Confusion in FreeRTOS

Published: November 9, 2026

Security Bulletin ID SB20261109153
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Type Confusion (CVE-ID: CVE-2026-119086)

CWE-ID: CWE-843 - Type confusion

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local attacker with low privileges to compromise privileged execution integrity and cross the FreeRTOS-Kernel MPU task-isolation boundary.

The vulnerability exists due to missing object-type validation in xQueueSelectFromSet on MPU-enabled builds with queue sets enabled through configUSE_QUEUE_SETS=1. A local attacker with low privileges can pass an incompatible kernel object from an unprivileged task to trigger a queue-set operation that writes beyond its intended destination while executing in a privileged context.


Remediation

Install update from vendor's website.

References