[PATCH] net/bluetooth/cmtp/sock.c: add CAP_NET_RAW check.

[Qingyu Li]

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

Signed-off-by: Qingyu Li <ieatmuttonch...@gmail.com>
---
 net/bluetooth/cmtp/sock.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/bluetooth/cmtp/sock.c b/net/bluetooth/cmtp/sock.c
index 96d49d9fae96..476ccc9bee7c 100644
--- a/net/bluetooth/cmtp/sock.c
+++ b/net/bluetooth/cmtp/sock.c
@@ -207,6 +207,9 @@ static int cmtp_sock_create(struct net *net, struct socket 
*sock, int protocol,
        if (sock->type != SOCK_RAW)
                return -ESOCKTNOSUPPORT;

+       if (!capable(CAP_NET_RAW))
+               return -EPERM;
+
        sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &cmtp_proto, kern);
        if (!sk)
                return -ENOMEM;
--
2.17.1