FreeRTOS‑Kernel CVE‑2026‑119086：xQueueSelectFromSet 缺失型別驗證導致特權記憶體洩漏

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.

Impact

Affected Products

The following products are affected by CVE-2026-119086 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.

Upgrade FreeRTOS-Kernel to V11.3.3 and rebuild affected firmware.

• Upgrade FreeRTOS-Kernel to V11.3.3.
• Rebuild affected firmware.
• Reflash the firmware on affected devices.

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-119086.

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-119086 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-119086 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-119086 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2026-119086 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

• New CVE Received by ff89ba41-3aa1-4d27-914a-91399e9639e5

  十月. 30, 2026

  Action	Type	Old Value	New Value
  Added	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.
  Added	CVSS V4.0		AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  Added	CVSS V3.1		AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
  Added	CWE		CWE-121
  Added	CWE		CWE-843
  Added	Affected		New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/119xxx/CVE-2026-119086.json">CVE-2026-119086</a>
  Added	Reference		https://aws.amazon.com/security/security-bulletins/2026-158-aws/
  Added	Reference		https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.3
  Added	Reference		https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-56j9-g43f-8g6v

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.