PT-2026-55954 · Op Tee · Optee Os

Publicado 2026-07-06 · Atualizado 2026-07-06 · CVE-2026-40257

Mitre

CVSS v3.1

5.5

Média

Vetor base

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.

Correção

Memory Corruption

Enumeração de Fraquezas

CWE-787

Identificadores relacionados

CVE-2026-40257

Produtos afetados

Optee Os

Referências · 2

• https://github.com/OP-TEE/optee_os/security/advisories/GHSA-75x4-j8p9-55qv · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-40257 · Nota de Segurança