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CVE-2026-41515— OP-TEE: RSA-OAEP padding oracle in NXP CAAM driver enables plaintext recovery

CVSS 2.5 · Low EPSS 0.09% · P1

Possible ATT&CK Techniques 1AI

T1555 · Credentials from Password Stores

Affected Version Matrix 1

VendorProductVersion RangeStatus
OP-TEEoptee_os>= 3.9.0, < 4.11.0affected
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I. Basic Information for CVE-2026-41515

Vulnerability Information
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Vulnerability Title
OP-TEE: RSA-OAEP padding oracle in NXP CAAM driver enables plaintext recovery
Source: NVD (National Vulnerability Database)
Vulnerability 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 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`.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过时间差异性导致的信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
OP-TEE optee_os 侧信道信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OP-TEE optee_os是OP-TEE的安全操作系统。 OP-TEE optee_os 3.9.0版本至4.11.0之前版本存在日志信息泄露漏洞，该漏洞源于NXP CAAM加密驱动程序中RSA-OAEP解密实现使用非常量时间memcmp()进行标签哈希验证，并存在多个可区分的错误路径，导致拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
OP-TEEoptee_os >= 3.9.0, < 4.11.0 -

II. Public POCs for CVE-2026-41515

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III. Intelligence Information for CVE-2026-41515

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Vendor Advisories for CVE-2026-41515 (1)

Same Patch Batch · OP-TEE · 2026-07-06 · 8 CVEs total

CVE-2026-402575.5 MEDIUMOP-TEE has SHA-3 accelerated finalize heap overflow
CVE-2026-443625.5 MEDIUMOP-TEE's subkey rollback protection can be bypassed with older subkey versions
CVE-2026-425463.8 LOWOP-TEE has missing OPTEE_MSG_ATTR_TYPE_MASK in cleanup_shm_refs() leaks mobj references
CVE-2026-414343.3 LOWOP-TEE has unbounded recursion in sanitize_client_object()
CVE-2026-415142.5 LOWOP-TEE: RSA-OAEP padding oracle in Hisilicon HPRE driver enables plaintext recovery
CVE-2026-415162.5 LOWOP-TEE: Hisilicon HPRE PKCS#1 v1.5 Decryption Padding Oracle
CVE-2026-53763OP-TEE has AES-GCM 32-bit integer overflow in length counters that breaks authentication g

IV. Related Vulnerabilities

Same product: optee_os
Same vendor: OP-TEE
Same weakness: CWE-208

V. Comments for CVE-2026-41515

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