static void clear_all_pkt_pointers(struct bpf_verifier_env *env)
{
	struct bpf_verifier_state *vstate = env->cur_state;
	int i;

	for (i = 0; i <= vstate->curframe; i++)
		__clear_all_pkt_pointers(env, vstate->frame[i]);
}

The product reads data past the end, or before the beginning, of the intended buffer.