CVE-2026-41514

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 4.5.0 and prior to version 4.11.0, the RSA-OAEP decryption implementation in the Hisilicon HPRE crypto driver uses non-constant-time `memcmp()` for label hash verification and has multiple distinguishable error paths. This creates a Manger-style padding oracle that allows an attacker to recover RSA-OAEP plaintext with approximately 1000-2000 adaptive chosen ciphertext queries. Only affects plat-d06 with `CFG_HISILICON_ACC_V3=y`, which seems to be disabled by default. Version 4.11.0 contains a patch. As a workaround, disable Hisilicon HPRE RSA driver with `CFG_HISILICON_ACC_V3=n`.

CVSS v3 2.5 LOW

2.5^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.0 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/OP-TEE/optee_os/security/advisories/GHSA-qw4r-9wj9-q23r	Vendor Advisory Mitigation Patch

Configurations

Configuration 1 (hide)

cpe:2.3:o:trustedfirmware:op-tee:*:*:*:*:*:*:*:*

History

07 Jul 2026, 18:50

Type	Values Removed	Values Added
References	~~() https://github.com/OP-TEE/optee_os/security/advisories/GHSA-qw4r-9wj9-q23r -~~	() https://github.com/OP-TEE/optee_os/security/advisories/GHSA-qw4r-9wj9-q23r - Vendor Advisory, Mitigation, Patch
First Time		Trustedfirmware op-tee Trustedfirmware
CPE		cpe:2.3:o:trustedfirmware:op-tee::::::::

06 Jul 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-06 20:16

Updated : 2026-07-07 18:50

NVD link : CVE-2026-41514

Mitre link : CVE-2026-41514

CVE.ORG link : CVE-2026-41514

JSON object : View

Products Affected

trustedfirmware

op-tee

CWE

CWE-208

Observable Timing Discrepancy

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