The following code is for security research and authorized testing only.
python
#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;
}