Language: C
Label: safe
CWE: CWE-416 \u2014 Use After Free
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

Code:
static void tp_ice_on_destroy(void *arg)
{
    struct transport_ice *tp_ice = (struct transport_ice*)arg;

    PJ_LOG(4, (tp_ice->base.name, "ICE transport destroyed"));
    pj_pool_safe_release(&tp_ice->pool);
}