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

> CVE-2026-119086: Missing type validation in xQueueSelectFromSet in FreeRTOS-Kernel. CVSS 6.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-119086
Last updated: 2026-10-30T20:17:06Z

- Published: 2026-10-30 17:33 UTC · Updated: 2026-10-30 20:17 UTC · Assigner: AMZN
- CVSS: 6.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
- EPSS: 0.16%, 5th percentile (scored 2026-11-05)
- CISA KEV: no
- CWE: CWE-121, CWE-843

## Description

Missing queue-set type validation in the queue-set selection system call in FreeRTOS-Kernel before V11.3.3 on MPU-enabled ports with queue sets enabled allows a local unprivileged task to write actor-controlled data beyond a pointer-sized object on the privileged kernel stack, affecting privileged memory across the MPU isolation boundary. To remediate this issue, users should upgrade to FreeRTOS-Kernel V11.3.3, rebuild, and reflash affected firmware. Builds that do not enable queue sets are not affected.

## Affected vendors and products

- FreeRTOS: FreeRTOS-Kernel

## Tracked companies

- [Amazon Web Services](https://rewindex.com/company/aws.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-119086)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-119086)
- [https://aws.amazon.com/security/security-bulletins/2026-158-aws/](https://aws.amazon.com/security/security-bulletins/2026-158-aws/)
- [https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.3](https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.3)
- [https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-56j9-g43f-8g6v](https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-56j9-g43f-8g6v)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-119086 · Markdown: https://rewindex.com/cve/CVE-2026-119086.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-119086 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T17:15:47.614Z