CVE-2026-34849 华为屏幕管理模块UAF漏洞

#include <stdio.h> #include <stdlib.h> // Simulated vulnerable structure for Screen Management typedef struct ScreenObject { int id; void (*render)(void); } ScreenObject; void vulnerable_function() { ScreenObject *obj = (ScreenObject *)malloc(sizeof(ScreenObject)); obj->id = 1; obj->render = NULL; // The module frees the object free(obj); // Vulnerability: Use after free // The code checks obj->id without realizing it was freed if (obj->id == 1) { printf("Accessing freed memory!\n"); // This could lead to crash or arbitrary code execution if memory is reallocated } } int main() { vulnerable_function(); return 0; }