MEDIUMVulnerability
CVE-2026-71967
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.
Properties
- severity
- MEDIUM
- score
- 5.5
- cve_id
- CVE-2026-71967
- signal_observed_at
- 2026-09-16T21:36:59+00:00
- vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- published_at
- 2026-08-10T19:17:32.103
- last_modified
- 2026-09-16T20:32:21.400
Related Entities (2)
HAS_WEAKNESS (1)
→[Weakness]NULL Pointer Dereference
DESCRIBED_BY (1)
→[Source]NVD
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