CVE-2026-71967: fallo de gravedad media en OP-TEE optee_os
OP-TEE OS 4.10.0 NULL Pointer Dereference DoS via Widevine PTA open_session
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 5.7epss 0.2%
OP-TEE OS through 4.10.0, fixed in commit 0aadfc2, contains a null pointer dereference vulnerability in the Widevine pseudo-TA open_session handler that allows Normal World clients to cause a denial of service when CFG_WIDEVINE_PTA is enabled. Attackers can open a session directly on the Widevine PTA to trigger an unconditional dereference of a NULL calling session pointer via is_user_ta_ctx(), faulting the TEE at S-EL1 and crashing the trusted execution environment.
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Productos afectados
OP-TEE · optee_osCVEs relacionadas — OP-TEE optee_os
En el mismo producto, de las más peligrosas a las menos.
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%