High severity7.8NVD Advisory· Published Dec 7, 2021· Updated Jun 5, 2026
CVE-2021-44149
CVE-2021-44149
Description
An issue was discovered in Trusted Firmware OP-TEE Trusted OS through 3.15.0. The OPTEE-OS CSU driver for NXP i.MX6UL SoC devices lacks security access configuration for wakeup-related registers, resulting in TrustZone bypass because the NonSecure World can perform arbitrary memory read/write operations on Secure World memory. This involves a v cycle.
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Affected products
3- Trusted Firmware/OP-TEE Trusted OSdescription
Patches
Vulnerability mechanics
References
2- github.com/OP-TEE/optee_os/tagsnvdRelease NotesThird Party Advisory
- github.com/f-secure-foundry/advisories/blob/master/Security_Advisory-Ref_FSC-HWSEC-VR2021-0002-OP-TEE_TrustZone_bypass_at_wakeup.txtnvdThird Party Advisory
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