Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-41516— OP-TEE: Hisilicon HPRE PKCS#1 v1.5 Decryption Padding Oracle

Quick assessment

Affected
OP-TEE optee_os
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OP-TEE optee_os是OP-TEE的安全操作系统。 OP-TEE optee_os 4.5.0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Hisilicon HPRE加密驱动程序中RSA PKCS#1 v1.5解密实现使用了非恒定时间的memcmp()进行标签哈希验证，并具有多个可区分的错误路径，可能导致攻击者恢复RSA PKCS#1 v1.5明文。

CVSS 2.5 · Low EPSS 0.14% · P3

Possible ATT&CK Techniques 1 AI

T1056 · Input Capture

Affected Version Matrix 1

VendorProduct Version RangeStatus
OP-TEE optee_os >= 4.5.0, < 4.11.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-41516

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
OP-TEE: Hisilicon HPRE PKCS#1 v1.5 Decryption Padding Oracle
Source: CVE Program / CVE List V5
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 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`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过时间差异性导致的信息暴露
Source: CVE Program / CVE List V5
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 4.5.0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Hisilicon HPRE加密驱动程序中RSA PKCS#1 v1.5解密实现使用了非恒定时间的memcmp()进行标签哈希验证，并具有多个可区分的错误路径，可能导致攻击者恢复RSA PKCS#1 v1.5明文。
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

Vendor Product Affected Versions CPE Subscribe
OP-TEE optee_os >= 4.5.0, < 4.11.0 -

II. Public POCs for CVE-2026-41516

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-41516

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-41516 (1)

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

CVE-2026-40257 5.5 MEDIUM OP-TEE has SHA-3 accelerated finalize heap overflow
CVE-2026-44362 5.5 MEDIUM OP-TEE's subkey rollback protection can be bypassed with older subkey versions
CVE-2026-42546 3.8 LOW OP-TEE has missing OPTEE_MSG_ATTR_TYPE_MASK in cleanup_shm_refs() leaks mobj references
CVE-2026-41434 3.3 LOW OP-TEE has unbounded recursion in sanitize_client_object()
CVE-2026-41514 2.5 LOW OP-TEE: RSA-OAEP padding oracle in Hisilicon HPRE driver enables plaintext recovery
CVE-2026-41515 2.5 LOW OP-TEE: RSA-OAEP padding oracle in NXP CAAM driver enables plaintext recovery
CVE-2026-53763 OP-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-2026-41516

No comments yet

Leave a comment