print_option(char *s, ssize_t len, int type, int dl, const uint8_t *data)
{
 const uint8_t *e, *t;
 uint16_t u16;
 int16_t s16;
 uint32_t u32;
 int32_t s32;
 struct in_addr addr;
 ssize_t bytes = 0;
 ssize_t l;
 char *tmp;

 if (type & RFC3397) {
		l = decode_rfc3397(NULL, 0, dl, data);
 if (l < 1)
 return l;
		tmp = xmalloc(l);
		decode_rfc3397(tmp, l, dl, data);
		l = print_string(s, len, l - 1, (uint8_t *)tmp);
		free(tmp);
 return l;
 }

 if (type & RFC3361) {
 if ((tmp = decode_rfc3361(dl, data)) == NULL)
 return -1;
		l = strlen(tmp);
		l = print_string(s, len, l - 1, (uint8_t *)tmp);
		free(tmp);
 return l;
 }

 if (type & RFC3442)
 return decode_rfc3442(s, len, dl, data);

 if (type & RFC5969)
 return decode_rfc5969(s, len, dl, data);

 if (type & STRING) {
 /* Some DHCP servers return NULL strings */
 if (*data == '\0')
 return 0;
 return print_string(s, len, dl, data);
 }

 if (!s) {
 if (type & UINT8)
			l = 3;
 else if (type & UINT16) {
			l = 5;
			dl /= 2;
 } else if (type & SINT16) {
			l = 6;
			dl /= 2;
 } else if (type & UINT32) {
			l = 10;
			dl /= 4;
 } else if (type & SINT32) {
			l = 11;
			dl /= 4;
 } else if (type & IPV4) {
			l = 16;
			dl /= 4;
 } else {
			errno = EINVAL;
 return -1;
 }
 return (l + 1) * dl;
 }

	t = data;
	e = data + dl;
 while (data < e) {
 if (data != t) {
 *s++ = ' ';
			bytes++;
			len--;
 }
 if (type & UINT8) {
			l = snprintf(s, len, "%d", *data);
			data++;
 } else if (type & UINT16) {
			memcpy(&u16, data, sizeof(u16));
			u16 = ntohs(u16);
			l = snprintf(s, len, "%d", u16);
			data += sizeof(u16);
 } else if (type & SINT16) {
			memcpy(&s16, data, sizeof(s16));
			s16 = ntohs(s16);
			l = snprintf(s, len, "%d", s16);
			data += sizeof(s16);
 } else if (type & UINT32) {
			memcpy(&u32, data, sizeof(u32));
			u32 = ntohl(u32);
			l = snprintf(s, len, "%d", u32);
			data += sizeof(u32);
 } else if (type & SINT32) {
			memcpy(&s32, data, sizeof(s32));
			s32 = ntohl(s32);
			l = snprintf(s, len, "%d", s32);
			data += sizeof(s32);
 } else if (type & IPV4) {
			memcpy(&addr.s_addr, data, sizeof(addr.s_addr));
			l = snprintf(s, len, "%s", inet_ntoa(addr));
			data += sizeof(addr.s_addr);
 } else
			l = 0;
 if (len <= l) {
			bytes += len;
 break;
 }
		len -= l;
		bytes += l;
		s += l;
 }

 return bytes;
}

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.