static inline struct h2s *h2c_st_by_id(struct h2c *h2c, int id)
{
	struct eb32_node *node;

	if (id > h2c->max_id)
		return (struct h2s *)h2_idle_stream;

	node = eb32_lookup(&h2c->streams_by_id, id);
	if (!node)
		return (struct h2s *)h2_closed_stream;

	return container_of(node, struct h2s, by_id);
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.