CVE-2026-34341 Windows LLDP双重释放权限提升漏洞

#include <windows.h> #include <stdio.h> // Conceptual PoC for CVE-2026-34341: Windows LLDP Double Free // This code simulates the memory corruption condition. void simulate_vulnerability() { HANDLE hHeap = GetProcessHeap(); LPVOID pMem = HeapAlloc(hHeap, 0, 0x100); printf("[*] Allocated memory at: %p\n", pMem); // First free (Simulating the vulnerable component releasing the object) HeapFree(hHeap, 0, pMem); printf("[*] Memory freed first time.\n"); // Vulnerability trigger: Logic flaw leads to second free without nulling pointer // In real scenario, specific LLDP packet parsing triggers this path if (pMem != NULL) { HeapFree(hHeap, 0, pMem); // Double Free occurs here printf("[!] Double Free triggered! Heap corruption imminent.\n"); } } int main() { printf("CVE-2026-34341 PoC (Simulation)\n"); simulate_vulnerability(); return 0; }