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CVE-2026-41516

nvd nist
Published: Jul 6, 2026Modified: Jul 7, 2026

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3.3
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Exploitability: 1.8 / Impact: 1.4
Source: NVD

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 4.5.0 and prior to version 4.11.0, the RSA PKCS#1 v1.5 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 Bleichenbacher-style padding oracle that allows an attacker to recover RSA PKCS#1 v1.5 plaintext. Version 4.11.0 contains a patch. As a workaround, disable Hisilicon HPRE RSA driver with `CFG_HISILICON_ACC_V3=n`.

Affected (1)

Trustedfirmware
1 product
Op Tee
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Op Tee
From 4.5.0 to 4.10.0

Related CWEs

CWE-208
Observable Timing Discrepancy
Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.

References (1)

Source: security-advisories@github.com
MitigationVendor AdvisoryExploitPatch

Timeline

No history available yet.