static void tsc210x_touchscreen_event(void *opaque,
                int x, int y, int z, int buttons_state)
{
    TSC210xState *s = opaque;
    int p = s->pressure;

    if (buttons_state) {
        s->x = x;
        s->y = y;
    }
    s->pressure = !!buttons_state;

    /*
     * Note: We would get better responsiveness in the guest by
     * signaling TS events immediately, but for now we simulate
     * the first conversion delay for sake of correctness.
     */
    if (p != s->pressure)
        tsc210x_pin_update(s);
}

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.