CVE-2026-45702 (GCVE-0-2026-45702)

Vulnerability from cvelistv5 – Published: 2026-06-03 17:55 – Updated: 2026-06-04 12:54
VLAI
Title
OP-TEE has FF-A type confusion in SPMC tmem path that causes S-EL1 kernel panic
Summary
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.
Severity
4.4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-04 12:53 UTC
CWE
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
References
Impacted products
Vendor Product Version
OP-TEE optee_os Affected: >= 4.3.0, < 4.11.0
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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