39 lines
1.3 KiB
Diff
39 lines
1.3 KiB
Diff
From: David Ahern <dsahern@gmail.com>
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Date: Wed, 2 Jan 2019 18:57:09 -0800
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Subject: ipv6: Consider sk_bound_dev_if when binding a socket to an address
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Origin: https://git.kernel.org/linus/c5ee066333ebc322a24a00a743ed941a0c68617e
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Bug-Debian: https://bugs.debian.org/918103
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IPv6 does not consider if the socket is bound to a device when binding
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to an address. The result is that a socket can be bound to eth0 and then
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bound to the address of eth1. If the device is a VRF, the result is that
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a socket can only be bound to an address in the default VRF.
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Resolve by considering the device if sk_bound_dev_if is set.
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This problem exists from the beginning of git history.
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Signed-off-by: David Ahern <dsahern@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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net/ipv6/af_inet6.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
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index f0cd291034f0..0bfb6cc0a30a 100644
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--- a/net/ipv6/af_inet6.c
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+++ b/net/ipv6/af_inet6.c
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@@ -350,6 +350,9 @@ static int __inet6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len,
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err = -EINVAL;
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goto out_unlock;
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}
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+ }
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+
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+ if (sk->sk_bound_dev_if) {
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dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if);
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if (!dev) {
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err = -ENODEV;
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--
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2.20.1
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