CVE-2025-36935: Android Trusty trusty_ffa_mem_reclaim未初始化数据导致本地权限提升漏洞

# CVE-2025-36935 PoC - Android Trusty trusty_ffa_mem_reclaim Uninitialized Data # This PoC demonstrates the vulnerability concept (for research purposes only) import struct import ctypes # Simulated Trusty FF-A message structure class TrustyFFAMessage(ctypes.Structure): _fields_ = [ ("cmd", ctypes.c_uint32), ("flags", ctypes.c_uint32), ("buffer_ptr", ctypes.c_uint64), ("buffer_size", ctypes.c_uint32), ] def exploit_trusty_ffa_mem_reclaim(): """ Simulated exploitation of CVE-2025-36935 The vulnerability exists in trusty_ffa_mem_reclaim() function where memory buffers are not properly initialized before use. """ print("[*] CVE-2025-36935 - Trusty FF-A Uninitialized Memory Exploitation") # Step 1: Create FF-A message for memory reclaim operation msg = TrustyFFAMessage() msg.cmd = 0x84000001 # TRUSTY_FFA_MEM_RECLAIM msg.flags = 0x0 msg.buffer_ptr = 0x0 # Uninitialized pointer msg.buffer_size = 0x1000 # Step 2: Trigger the vulnerable code path # In the vulnerable version, the buffer is not zeroed print("[*] Triggering trusty_ffa_mem_reclaim()...") print("[*] Buffer initialized: NO (vulnerable state)") # Step 3: Memory corruption occurs due to uninitialized data # Attackers can leverage residual data in memory for privilege escalation print("[!] Potential memory corruption detected") print("[!] Uninitialized memory may contain sensitive data") # Step 4: Privilege escalation print("[+] Exploitation successful - Local privilege escalation achieved") print("[+] Attacker can now execute code with elevated privileges") return True if __name__ == "__main__": print("=" * 60) print("CVE-2025-36935 Proof of Concept") print("Android Trusty trusty_ffa_mem_reclaim Uninitialized Data") print("CVSS 3.1: 7.8 (High)") print("=" * 60) try: exploit_trusty_ffa_mem_reclaim() except Exception as e: print(f"[-] Error: {e}") print("\n[*] Note: This is a simulated PoC for security research.") print("[*] Actual exploitation requires physical or ADB access to device.")