| From foo@baz Fri 31 May 2019 03:55:52 PM PDT |
| From: Mike Manning <mmanning@vyatta.att-mail.com> |
| Date: Mon, 20 May 2019 19:57:17 +0100 |
| Subject: ipv6: Consider sk_bound_dev_if when binding a raw socket to an address |
| |
| From: Mike Manning <mmanning@vyatta.att-mail.com> |
| |
| [ Upstream commit 72f7cfab6f93a8ea825fab8ccfb016d064269f7f ] |
| |
| IPv6 does not consider if the socket is bound to a device when binding |
| to an address. The result is that a socket can be bound to eth0 and |
| then bound to the address of eth1. If the device is a VRF, the result |
| is that a socket can only be bound to an address in the default VRF. |
| |
| Resolve by considering the device if sk_bound_dev_if is set. |
| |
| Signed-off-by: Mike Manning <mmanning@vyatta.att-mail.com> |
| Reviewed-by: David Ahern <dsahern@gmail.com> |
| Tested-by: David Ahern <dsahern@gmail.com> |
| Signed-off-by: David S. Miller <davem@davemloft.net> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| net/ipv6/raw.c | 2 ++ |
| 1 file changed, 2 insertions(+) |
| |
| --- a/net/ipv6/raw.c |
| +++ b/net/ipv6/raw.c |
| @@ -283,7 +283,9 @@ static int rawv6_bind(struct sock *sk, s |
| /* Binding to link-local address requires an interface */ |
| if (!sk->sk_bound_dev_if) |
| goto out_unlock; |
| + } |
| |
| + if (sk->sk_bound_dev_if) { |
| err = -ENODEV; |
| dev = dev_get_by_index_rcu(sock_net(sk), |
| sk->sk_bound_dev_if); |
