[PATCH 5.3 037/344] nfc: enforce CAP_NET_RAW for raw sockets

[Greg Kroah-Hartman]

From: Ori Nimron <orinimron...@gmail.com>

[ Upstream commit 3a359798b176183ef09efb7a3dc59abad1cc7104 ]

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

Signed-off-by: Ori Nimron <orinimron...@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 net/nfc/llcp_sock.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/net/nfc/llcp_sock.c
+++ b/net/nfc/llcp_sock.c
@@ -1004,10 +1004,13 @@ static int llcp_sock_create(struct net *
            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 = &llcp_rawsock_ops;
-       else
+       } else {
                sock->ops = &llcp_sock_ops;
+       }
 
        sk = nfc_llcp_sock_alloc(sock, sock->type, GFP_ATOMIC, kern);
        if (sk == NULL)