PT-2026-55954 · Op Tee · Optee Os
Published
2026-07-06
·
Updated
2026-07-06
·
CVE-2026-40257
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
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 3.21.0 and prior to version 4.11.0, the ARM Crypto Extensions accelerated SHA-3 implementation has an off-by-one error that can cause a massive heap overflow that corrupts all TEE kernel memory following the hash state. This affects all platforms built with
CFG CRYPTO WITH CE82=y (ARMv8.2+ with SHA3 Crypto Extensions). Version 4.11.0 contains a patch. As a workaround, disable SHA3 Crypto Extensions with CFG CRYPTO WITH CE82=n.Fix
Memory Corruption
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Weakness Enumeration
Related Identifiers
Affected Products
Optee Os