The following code is for security research and authorized testing only.
python
/*
* PoC for CVE-2026-34330 (Conceptual)
* Triggering Integer Overflow in Win32k GRFX
*/
#include <windows.h>
#include <stdio.h>
int main() {
printf("[+] PoC Start for CVE-2026-34330\n");
// Attempt to create a scenario that triggers the integer overflow
// In a real scenario, this involves specific GDI object manipulations
HDC hdc = GetDC(NULL);
if (hdc == NULL) {
printf("[-] Failed to get device context\n");
return 1;
}
// This is a placeholder for the vulnerable API call sequence
// which would cause the wraparound in size calculation.
// e.g., CreateBitmap, ExtCreateRegion, etc.
printf("[+] Triggering vulnerability logic...\n");
// Vulnerable call placeholder
ReleaseDC(NULL, hdc);
printf("[+] PoC End\n");
return 0;
}