OP-TEE up to 4.10.x NXP CAAM Crypto Driver memcmp missing encryption

Summaryinfo

A vulnerability classified as problematic was found in OP-TEE up to 4.10.x. Impacted is the function memcmp of the component NXP CAAM Crypto Driver. Such manipulation leads to missing encryption. This vulnerability is uniquely identified as CVE-2026-41515. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in OP-TEE up to 4.10.x and classified as problematic. Affected by this issue is the function memcmp of the component NXP CAAM Crypto Driver. The manipulation with an unknown input leads to a missing encryption vulnerability. Using CWE to declare the problem leads to CWE-311. The product does not encrypt sensitive or critical information before storage or transmission. Impacted is confidentiality. CVE summarizes:

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 3.9.0 and prior to version 4.11.0, the RSA-OAEP decryption implementation in the NXP CAAM 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. Version 4.11.0 contains a patch. As a workaround, disable the NXP CAAM RSA driver with `CFG_CRYPTO_DRV_RSA=n`.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-41515 since 04/20/2026. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1600 by the MITRE ATT&CK project.

Upgrading to version 4.11.0 eliminates this vulnerability.

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Productinfo

Name

• OP-TEE

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7
• 4.8
• 4.9
• 4.10

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CPE 2.2info

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