OP-TEE Trusted OS is the secure side implementation of OP-TEE project, a Trusted Execution Environment. Versions prior to 3.19.0, contain an Improper Validation of Array Index vulnerability. The function `cleanup_shm_refs()` is called by both `entry_invoke_command()` and `entry_open_session()`. The commands `OPTEE_MSG_CMD_OPEN_SESSION` and `OPTEE_MSG_CMD_INVOKE_COMMAND` can be executed from the normal world via an OP-TEE SMC. This function is not validating the `num_params` argument, which is only limited to `OPTEE_MSG_MAX_NUM_PARAMS` (127) in the function `get_cmd_buffer()`. Therefore, an attacker in the normal world can craft an SMC call that will cause out-of-bounds reading in `cleanup_shm_refs` and potentially freeing of fake-objects in the function `mobj_put()`. A normal-world attacker with permission to execute SMC instructions may exploit this flaw. Maintainers believe this problem permits local privilege escalation from the normal world to the secure world. Version 3.19.0 contains a fix for this issue. There are no known workarounds.
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Tue, 22 Apr 2025 16:15:00 +0000
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2022-11-29T00:00:00.000Z
Updated: 2025-04-22T15:59:11.617Z
Reserved: 2022-11-28T00:00:00.000Z
Link: CVE-2022-46152

Updated: 2024-08-03T14:24:03.271Z

Status : Modified
Published: 2022-11-29T17:15:11.453
Modified: 2024-11-21T07:30:12.813
Link: CVE-2022-46152

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