net/nfc/rawsock.c: add CAP_NET_RAW check.

[ Upstream commit 26896f01467a28651f7a536143fe5ac8449d4041 ]

When creating a raw AF_NFC socket, CAP_NET_RAW needs to be checked first.

Signed-off-by: Qingyu Li <ieatmuttonchuan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
index ba5ffd3badd3244b70e9098a85594c65917a25a2..b5c867fe3232485b33c9856683ea2fc4d41b8fea 100644 (file)
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c
@@ -332,10 +332,13 @@ static int rawsock_create(struct net *net, struct socket *sock,
        if ((sock->type != SOCK_SEQPACKET) && (sock->type != SOCK_RAW))
                return -ESOCKTNOSUPPORT;
 
-       if (sock->type == SOCK_RAW)
+       if (sock->type == SOCK_RAW) {
+               if (!capable(CAP_NET_RAW))
+                       return -EPERM;
                sock->ops = &rawsock_raw_ops;
-       else
+       } else {
                sock->ops = &rawsock_ops;
+       }
 
        sk = sk_alloc(net, PF_NFC, GFP_ATOMIC, nfc_proto->proto, kern);
        if (!sk)