CVE-2026-41516: low-severity vulnerability in OP-TEE optee_os
OP-TEE: Hisilicon HPRE PKCS#1 v1.5 Decryption Padding Oracle
Published
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8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 2.5epss 0.1%
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`.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected products
OP-TEE · optee_osRelated CVEs — OP-TEE optee_os
In the same product, most dangerous first.
CVE-2022-46152HIGHOP-TEE Trusted OS vulnerable to Improper Validation of Array Index in the cleanup_shm_refs functionEPSS 0.5%CVE-2026-33662HIGHOP-TEE: RSASSA EMSA- PKCS1-v1_5 underflow in emsa_pkcs1_v1_5_encode()EPSS 0.4%CVE-2023-41325HIGHOP-TEE double free in shdr_verify_signatureEPSS 0.4%CVE-2026-53763LOWOP-TEE has AES-GCM 32-bit integer overflow in length counters that breaks authentication guaranteeEPSS 0.2%CVE-2026-40290HIGHOP-TEE has a Use-After-Free race in FF-A shared-memory teardownEPSS 0.2%CVE-2026-33317HIGHOP-TEE: PKCS#11 TA out-of-bounds read and memory disclosureEPSS 0.2%