static inline __maybe_unused void h2s_error(struct h2s *h2s, enum h2_err err)
{
	if (h2s->st > H2_SS_IDLE && h2s->st < H2_SS_ERROR) {
		h2s->errcode = err;
		h2s->st = H2_SS_ERROR;
		if (h2s->cs)
			h2s->cs->flags |= CS_FL_ERROR;
	}
}

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.