CVE-2026-40257

Katalog CVE

CVSS 5.5 · Medium EPSS 0,15%

Kerentanan Out-of-bounds Write pada trustedfirmware op-tee. Skor CVSS 3.1 5.5 (Medium) menurut github.com.

Deskripsi (NVD)

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`.

Rincian

Terbit di NVD

6 Juli 2026

Terakhir diubah

7 Juli 2026

Status NVD

Analyzed

CVSS 3.1

5.5 (Medium), sumber github.com
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-787: Out-of-bounds Write

EPSS (30 hari)

0,15% peluang dieksploitasi; lebih tinggi dari 3,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/OP-TEE/optee_os/security/advisories/GHSA-75x4-j8p9-55qv mitigasi · patch · advisory vendor