Listen to this Post
The vulnerability CVE-2025-22432 is located within the `notifyTimeout` method of the `CallRedirectionProcessor.java` component in the Android framework. This method is responsible for handling timeout events during telephony call redirection processes. Due to insufficient validation of input parameters, a malicious application can trigger this method with crafted data that prevents the system from properly closing a persistent IPC (Inter-Process Communication) connection. By maintaining this open connection, the attacker gains an unintended handle to a system service with elevated privileges. The exploit leverages this persistent connection to perform a time-of-check to time-of-use (TOCTOU) attack, where system state changes between the validation point and the execution point. This allows the malicious app, operating with standard user permissions, to inject and execute code within the privileged system_server process context. Consequently, it achieves a local escalation of privilege, enabling the attacker to silently launch background activities, access sensitive user data, or modify system settings without any user interaction required for successful exploitation.
Platform: Android
Version: Not Specified
Vulnerability: Improper Input Validation
Severity: Critical
date: 12/08/2025
Prediction: 12/15/2025
What Undercode Say:
`adb shell getprop ro.build.version.security_patch`
`grep -r “notifyTimeout” ./frameworks/`
`git log –oneline –grep=”22432″`
How Exploit:
A malicious app invokes the call redirection service flaw. It crafts parameters to trigger notifyTimeout. The system fails to validate and close the connection. The app maintains a persistent IPC link. It performs a TOCTOU race condition. Code executes within the privileged system_server.
Protection from this CVE:
Apply Android security updates. Validate all call redirection inputs. Implement proper connection lifecycle management. Use SELinux sandboxing enforcement. Audit system service IPC endpoints.
Impact:
Local privilege escalation. Unauthorized background activity launches. System integrity compromise. Bypass of user consent mechanisms. Potential for persistent device access.
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
