PT-2026-55972 · Op Tee · Optee Os
Publicado
2026-07-06
·
Atualizado
2026-07-06
·
CVE-2026-41514
CVSS v3.1
2.5
Baixa
| Vetor | AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
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-OAEP 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 Manger-style padding oracle that allows an attacker to recover RSA-OAEP plaintext with approximately 1000-2000 adaptive chosen ciphertext queries. Only affects plat-d06 with CFG HISILICON ACC V3=y, which seems to be disabled by default. Version 4.11.0 contains a patch. As a workaround, disable Hisilicon HPRE RSA driver with CFG HISILICON ACC V3=n.Correção
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