{"id":"UBUNTU-CVE-2021-36133","details":"The OPTEE-OS CSU driver for NXP i.MX SoC devices lacks security access configuration for several models, resulting in TrustZone bypass because the NonSecure World can perform arbitrary memory read/write operations on Secure World memory. This involves a DMA capable peripheral.","modified":"2026-05-20T16:05:05.056915075Z","published":"2021-12-07T21:15:00Z","upstream":["CVE-2021-36133"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-36133"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-36133"},{"type":"REPORT","url":"https://github.com/OP-TEE/optee_os/security/advisories/GHSA-6q85-3ph3-rm47"}],"affected":[{"package":{"name":"optee-os","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/optee-os?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.0-1","4.5.0-2","4.7.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.7.0-1","binary_name":"optee-os"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36133.json"}},{"package":{"name":"optee-os","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/optee-os?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.7.0-1","4.8.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"optee-os","binary_version":"4.8.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36133.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}