CVE-2026-45702

Description

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.

PUBLISHED Reserved 2026-05-13 | Published 2026-06-03 | Updated 2026-06-04 | Assigner GitHub_M

Problem types

CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')

Product status

References

github.com/...tee_os/security/advisories/GHSA-86pj-8xgw-66p5

cve.org (CVE-2026-45702)

nvd.nist.gov (CVE-2026-45702)

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