{"id":"CVE-2026-119086","state":"PUBLISHED","title":"Missing type validation in xQueueSelectFromSet in FreeRTOS-Kernel","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.\n\n\n\nTo 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.","publishedAt":"2026-10-30T17:33:51.535Z","updatedAt":"2026-10-30T20:04:33.929Z","severity":{"score":8.2,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N","source":"AMZN"},"assigner":"AMZN","products":["FreeRTOS FreeRTOS-Kernel"],"affected":[{"vendor":"FreeRTOS","product":"FreeRTOS-Kernel","defaultStatus":"unaffected","versions":[{"version":"7.4.0","status":"affected","lessThanOrEqual":"11.3.2","versionType":"custom"}]}],"references":["https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.3","https://aws.amazon.com/security/security-bulletins/2026-158-aws/","https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-56j9-g43f-8g6v"],"weaknesses":["CWE-843","CWE-121"],"ingestedAt":"2026-10-30T20:14:06.645Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/119xxx/CVE-2026-119086.json","commit":"d7f5c3fe206091a44e450f13bfe51dc81b8a7843","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-119086","state":"PUBLISHED","datePublished":"2026-10-30T17:33:51.535Z","dateUpdated":"2026-10-30T20:04:33.929Z","assignerShortName":"AMZN","assignerOrgId":"ff89ba41-3aa1-4d27-914a-91399e9639e5","dateReserved":"2026-10-29T13:18:10.340Z"},"containers":{"cna":{"title":"Missing type validation in xQueueSelectFromSet in FreeRTOS-Kernel","descriptions":[{"lang":"en","value":"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.\n\n\n\nTo remediate this issue, users should upgrade to FreeRTOS-Kernel V11.3.3, rebuild, and reflash affected firmware. 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