CVE-2026-45702
OP-TEE has FF-A type confusion in SPMC tmem path that causes S-EL1 kernel panic
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 4.4EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
03 Jun 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Affected products
OP-TEE · optee_osWant to know if your infrastructure is exposed to this?
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