Q: Given the following code slice:
```
1 static int nfc_llcp_setsockopt(struct socket *sock, int level, int optname,
2 			       sockptr_t optval, unsigned int optlen)
3 {
4 	struct sock *sk = sock->sk;
5 	struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
6 	u32 opt;
7 	int err = 0;
8 
9 	pr_debug("%p optname %d\n", sk, optname);
10 
11 	if (level != SOL_NFC)
12 		return -ENOPROTOOPT;
13 
14 	lock_sock(sk);
15 
16 	switch (optname) {
17 	case NFC_LLCP_RW:
18 		if (sk->sk_state == LLCP_CONNECTED ||
19 		    sk->sk_state == LLCP_BOUND ||
20 		    sk->sk_state == LLCP_LISTEN) {
21 			err = -EINVAL;
22 			break;
23 		}
24 
25 		if (copy_from_sockptr(&opt, optval, sizeof(u32))) {
26 			err = -EFAULT;
27 			break;
28 		}
29 
30 		if (opt > LLCP_MAX_RW) {
31 			err = -EINVAL;
32 			break;
33 		}
34 
35 		llcp_sock->rw = (u8) opt;
36 
37 		break;
38 
39 	case NFC_LLCP_MIUX:
40 		if (sk->sk_state == LLCP_CONNECTED ||
41 		    sk->sk_state == LLCP_BOUND ||
42 		    sk->sk_state == LLCP_LISTEN) {
43 			err = -EINVAL;
44 			break;
45 		}
46 
47 		if (copy_from_sockptr(&opt, optval, sizeof(u32))) {
48 			err = -EFAULT;
49 			break;
50 		}
51 
52 		if (opt > LLCP_MAX_MIUX) {
53 			err = -EINVAL;
54 			break;
55 		}
56 
57 		llcp_sock->miux = cpu_to_be16((u16) opt);
58 
59 		break;
60 
61 	default:
62 		err = -ENOPROTOOPT;
63 		break;
64 	}
65 
66 	release_sock(sk);
67 
68 	pr_debug("%p rw %d miux %d\n", llcp_sock,
69 		 llcp_sock->rw, llcp_sock->miux);
70 
71 	return err;
72 }
```
which has a vulnerability among CWE-476,CWE-787 and among lines:
```
14 	lock_sock(sk);
25 		if (copy_from_sockptr(&opt, optval, sizeof(u32))) {
47 		if (copy_from_sockptr(&opt, optval, sizeof(u32))) {
```
Please generate five possible patches for the vulnerability.