static void call_console_drivers(unsigned start, unsigned end)
{
	unsigned cur_index, start_print;
	static int msg_level = -1;

	BUG_ON(((int)(start - end)) > 0);

	cur_index = start;
 	start_print = start;
 	while (cur_index != end) {
 		if (msg_level < 0 && ((end - cur_index) > 2)) {
			/*
			 * prepare buf_prefix, as a contiguous array,
			 * to be processed by log_prefix function
			 */
			char buf_prefix[SYSLOG_PRI_MAX_LENGTH+1];
			unsigned i;
			for (i = 0; i < ((end - cur_index)) && (i < SYSLOG_PRI_MAX_LENGTH); i++) {
				buf_prefix[i] = LOG_BUF(cur_index + i);
			}
			buf_prefix[i] = '\0'; /* force '\0' as last string character */

 			/* strip log prefix */
			cur_index += log_prefix((const char *)&buf_prefix, &msg_level, NULL);
 			start_print = cur_index;
 		}
 		while (cur_index != end) {
			char c = LOG_BUF(cur_index);

			cur_index++;
			if (c == '\n') {
				if (msg_level < 0) {
					/*
					 * printk() has already given us loglevel tags in
					 * the buffer.  This code is here in case the
					 * log buffer has wrapped right round and scribbled
					 * on those tags
					 */
					msg_level = default_message_loglevel;
				}
				_call_console_drivers(start_print, cur_index, msg_level);
				msg_level = -1;
				start_print = cur_index;
				break;
			}
		}
	}
	_call_console_drivers(start_print, end, msg_level);
}

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.