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nfc: enforce CAP_NET_RAW for raw sockets

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[ Upstream commit 3a359798b176183ef09efb7a3dc59abad1cc7104 ]

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

Signed-off-by: Ori Nimron <orinimron123@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ori Nimron 2019-09-20 09:35:49 +02:00 • committed by Greg Kroah-Hartman
parent a279cd311c
commit 001ff46726
1 changed files with 5 additions and 2 deletions
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7
net/nfc/llcp_sock.c
View file

@ -1005,10 +1005,13 @@ static int llcp_sock_create(struct net *net, struct socket *sock,
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)