nyx/tests/dynamic_fixtures/escape/device_file_access.py

14 lines
390 B
Python

"""Escape attempt: open /dev/mem to read physical memory.
Requires CAP_SYS_RAWIO. Expected outcome: PermissionError.
"""
import sys
try:
with open("/dev/mem", "rb") as f:
data = f.read(64)
print(f"NYX_ESCAPE_SUCCESS: read {len(data)} bytes from /dev/mem")
sys.exit(0)
except (PermissionError, OSError) as e:
print(f"BLOCKED: {e}", file=sys.stderr)
sys.exit(1)