CVE-2019-1010293 in OP-TEE
Summary
by MITRE
Linaro/OP-TEE OP-TEE 3.3.0 and earlier is affected by: Boundary crossing. The impact is: Memory corruption of the TEE itself. The component is: optee_os. The fixed version is: 3.4.0 and later.
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Analysis
by VulDB Data Team • 06/05/2026
The vulnerability identified as CVE-2019-1010293 affects the Linaro/OP-TEE OP-TEE operating system version 3.3.0 and earlier, representing a critical boundary crossing issue within the optee_os component. This flaw exists in the Trusted Execution Environment implementation where improper input validation leads to memory corruption within the TEE itself. The vulnerability stems from insufficient bounds checking mechanisms that fail to properly validate data boundaries during processing operations. According to CWE-129, this corresponds to an implementation flaw where the system fails to validate input boundaries, allowing for potential buffer overflow conditions that can compromise the integrity of the secure execution environment.
The operational impact of this vulnerability extends beyond simple memory corruption, as it directly threatens the fundamental security guarantees provided by the Trusted Execution Environment. When memory corruption occurs within the TEE, it can lead to unauthorized access to sensitive data, compromise of cryptographic operations, and potential escalation of privileges within the secure domain. The vulnerability affects the core operating system functionality that manages secure applications and services, making it particularly dangerous for embedded systems and mobile devices that rely on OP-TEE for security isolation. Attackers exploiting this boundary crossing issue could potentially manipulate the TEE's memory layout, leading to complete compromise of the secure execution environment and undermining all security measures implemented by the system.
This vulnerability aligns with several ATT&CK techniques including T1059.007 for system services and T1547.001 for registry run keys, as the memory corruption could enable attackers to modify secure system components or establish persistent access. The exploitation typically requires understanding of the TEE memory layout and may involve crafting specific inputs that trigger the boundary crossing condition. Organizations using affected versions of OP-TEE should immediately implement mitigation strategies including patching to version 3.4.0 or later, which contains the necessary boundary checking fixes. Additional mitigations include implementing runtime monitoring for unusual memory access patterns, deploying intrusion detection systems specifically tailored for TEE environments, and conducting thorough security assessments of all applications running within the secure execution environment. The vulnerability demonstrates the critical importance of proper input validation in security-critical systems and highlights the need for comprehensive testing of boundary conditions in trusted execution environments.