5.5Medium
CVE-2026-40257OP-TEE has SHA-3 accelerated finalize heap overflow
Description
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`.
Weakness (CWE):
CWE-787
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| OP-TEE | optee_os | >= 3.21.0, < 4.11.0 | |
| trustedfirmware | op-tee | 3.21.0 – ≤ 4.10.0 |
References and patches
- https://github.com/OP-TEE/optee_os/security/advisories/GHSA-75x4-j8p9-55qv MitigationPatchVendor Advisory
CPE matches (NVD) (1)
cpe:2.3:o:trustedfirmware:op-tee:*:*:*:*:*:*:*:*≥ 3.21.0 ≤ 4.10.0