6.5Medium
CVE-2026-77237Missing type validation in xQueueAddToSet in FreeRTOS-Kernel
Description
Missing queue-set type validation in xQueueAddToSet() in the FreeRTOS-Kernel before 11.3.1 might allow an unprivileged task on MPU-enabled ports with configUSE_QUEUE_SETS=1 to read privileged kernel memory. To remediate this issue, users should upgrade to version 11.3.1 or later.
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| amazon | freertos | 7.4.0 – < 11.3.1 | |
| FreeRTOS | FreeRTOS-Kernel | 7.4.0 – ≤ 11.3.0 |
References and patches
- https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.1 patchRelease Notes
- https://aws.amazon.com/security/security-bulletins/2026-086-aws/ vendor-advisoryVendor Advisory
- https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-9wvc-hqvx-5wf5 third-party-advisoryVendor Advisory
CPE matches (NVD) (1)
cpe:2.3:o:amazon:freertos:*:*:*:*:*:*:*:*≥ 7.4.0 < 11.3.1