CVE-2026-34867 华为多模式输入系统双重释放漏洞

#include <stdio.h> #include <stdlib.h> #include <string.h> // Simulated PoC for Double Free Vulnerability // This code demonstrates the logic leading to a double free condition. void trigger_vulnerability(char* user_input) { char* buffer = (char*)malloc(100); if (buffer == NULL) return; printf("Buffer allocated at: %p\n", buffer); // First free: Freed under certain condition if (strlen(user_input) > 0) { free(buffer); printf("Buffer freed for the first time.\n"); } // Second free: Logic error causes double free // In a real scenario, this might happen in a different function path if (strcmp(user_input, "crash") == 0) { free(buffer); // Double Free occurs here printf("Buffer freed for the second time - CRASH!\n"); } } int main() { // Malicious input triggering the vulnerable path char input[] = "crash"; trigger_vulnerability(input); return 0; }