static inline int64_t pcnet_get_next_poll_time(PCNetState *s, int64_t current_time)
{
    int64_t next_time = current_time +
                        (65536 - (CSR_SPND(s) ? 0 : CSR_POLL(s))) * 30;
    if (next_time <= current_time)
        next_time = current_time + 1;
    return next_time;
}

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.