{"id":"CVE-2026-109587","summary":"Incorrect authorization in the Arm Cortex-R82 MPU port in FreeRTOS-Kernel","details":"Incorrect authorization in the Arm Cortex-R82 (Armv8-R AArch64) MPU port in FreeRTOS-Kernel V11.3.0 and V11.3.1 might allow an unprivileged task on MPU-enabled builds to read and write privileged kernel memory outside the regions assigned to it, via a buffer argument passed to an MPU system call.\n\n\n\nTo remediate this issue, users should upgrade to version V11.3.2 or later.","aliases":["GHSA-pv9j-rq42-3fjc"],"modified":"2026-10-24T02:48:40.257579148Z","published":"2026-10-16T17:08:07.685Z","database_specific":{"cwe_ids":["CWE-863"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109587.json","unresolved_ranges":[{"extracted_events":[{"strategy":"StandardRange","range":[{"introduced":"11.3.0"},{"last_affected":"11.3.1"}],"source":"AFFECTED_FIELD"}]},{"extracted_events":[{"range":[{"introduced":"11.3.0"},{"last_affected":"11.3.1"}],"source":"CPE_FIELD","strategy":"CPEApplicability"}]}],"cna_assigner":"AMZN"},"references":[{"type":"ADVISORY","url":"https://aws.amazon.com/security/security-bulletins/2026-138-aws/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109587.json"},{"type":"ADVISORY","url":"https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-pv9j-rq42-3fjc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109587"},{"type":"FIX","url":"https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.2"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/freertos/freertos-kernel","events":[{"introduced":"0"},{"fixed":"8a59a4b19bf72977819feddef87d41163ced7004"}],"database_specific":{"extracted_events":[{"original_tag":"V11.3.2","range":[{"fixed":"8a59a4b19bf72977819feddef87d41163ced7004"}],"source":"REFERENCES_TAG"}]}}],"versions":["V10.4.3","V10.4.2","V10.4.1-kernel-only","V10.4.0-kernel-only","V10.3.1-kernel-only","V10.3.0-kernel-only"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109587.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"}]}