Commit 45a9e9bc authored Sep 20, 2019 by Ori Nimron Committed by Greg Kroah-Hartman Oct 05, 2019

nfc: enforce CAP_NET_RAW for raw sockets



[ 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>

parent ddca1f39

net/nfc/llcp_sock.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -1011,10 +1011,13 @@ 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)