{"id":"UBUNTU-CVE-2026-45702","details":"OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Starting in version 4.3.0 and prior to version 4.11.0, a type confusion vulnerability exists in OP-TEE OS when processing an FFA_MEM_SHARE request from the normal world. This only applies when OP-TEE is configured as an SPMC for S-EL0 SPs, that is, with `CFG_CORE_SEL1_SPMC=y` and `CFG_SECURE_PARTITION=y`. Version 4.11.0 fixes the issue.","modified":"2026-06-12T09:02:01.709712331Z","published":"2026-06-03T19:16:00Z","upstream":["CVE-2026-45702"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-45702"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-45702"},{"type":"REPORT","url":"https://github.com/OP-TEE/optee_os/security/advisories/GHSA-86pj-8xgw-66p5"}],"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_name":"optee-os","binary_version":"4.7.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45702.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/2026/UBUNTU-CVE-2026-45702.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}