CVE-2026-58985 in Android
Summary
by MITRE • 11/02/2026
In handleConnectInternal of RpcServerTrusty.cpp, there is a possible denial of service due to a logic error in the code. This could lead to local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.
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Analysis
by VulDB Data Team • 11/02/2026
The vulnerability identified within the handleConnectInternal function of RpcServerTrusty.cpp represents a critical logical flaw that facilitates a local denial of service attack against Android Trusty IPC services. This component serves as part of the Trusted Execution Environment (TEE) communication layer, which is responsible for managing secure connections between normal world applications and the secure world. The specific logic error in this handler allows an attacker to trigger conditions that disrupt the operational continuity of the RPC server without requiring elevated privileges or user interaction. Because Trusty services often handle sensitive operations such as authentication, encryption key management, and DRM content protection, a disruption at this level can have cascading effects on system stability and security posture.
From a technical perspective, the flaw stems from improper validation or state management within the connection handling routine. When an unprivileged local user initiates a connection request that exploits this logic error, it likely causes the server to enter an unrecoverable state, crash, or hang indefinitely. This behavior effectively denies service to other legitimate processes attempting to communicate with Trusty services through the same IPC channel. The absence of necessary privilege escalation requirements means that any application running on the device can potentially trigger this condition, significantly lowering the barrier for exploitation compared to vulnerabilities requiring root access or system-level permissions.
The operational impact of this vulnerability is primarily centered around availability and reliability rather than confidentiality or integrity in the immediate sense. By causing a denial of service, an attacker can disrupt critical security services that rely on Trusty IPC. For instance, if the authentication subsystem becomes unavailable due to such a crash, users may be locked out of their devices until they are rebooted. Similarly, disruptions to DRM services could prevent media playback or affect secure video processing capabilities. In multi-tenant environments or high-security contexts where continuous availability is paramount, this vulnerability poses a significant risk by allowing low-level actors to degrade system functionality through simple connection attempts.
This issue aligns with CWE Category 20 Improper Input Validation and specifically relates to logic errors that lead to resource exhaustion or service disruption. In the context of the MITRE ATT&CK framework for mobile platforms, this behavior corresponds to techniques related to Denial of Service (T1499) where an adversary disrupts availability by consuming resources or crashing services. The lack of user interaction and privilege requirements places it in a higher risk category within threat modeling exercises, as automated tools could easily scan local interfaces to trigger the flaw repeatedly.
Mitigation strategies must focus on hardening the input validation logic within handleConnectInternal. Developers should implement rigorous checks for malformed connection requests, ensure proper state machine transitions that prevent invalid states from causing crashes, and incorporate robust error handling mechanisms that allow the service to recover gracefully rather than terminating entirely. Additionally, implementing resource limits such as maximum concurrent connections or timeouts can help mitigate the impact of repeated exploitation attempts. Regular security audits focusing on IPC handlers in Trusty services are recommended to identify similar logical flaws before they reach production builds. Patching this vulnerability requires updating the underlying Android framework and Trusty firmware components to include these defensive coding practices, ensuring that local untrusted applications cannot destabilize critical secure world interactions.