CVE-2026-40290

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 3.16.0 and prior to 4.11.0, a user-after-free UAF race condition exists in the shared memory teardown logic of FF-A...

CVE-2026-40290

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 3.16.0 and prior to 4.11.0, a user-after-free UAF race condition exists in the shared memory teardown logic of FF-A...

CVE-2026-40290

OP-TEE (Trusted Execution Environment) on Arm Cortex-A with TrustZone suffers a Use-After-Free race in FF-A shared-memory teardown when OP-TEE is configured as an SPMC for S-EL0 SPs (CFG_SECURE_PARTITION=y). The bug lies in sp_mem_remove() not acquiring the global sp_mem_lock before freeing entri...