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| author |   Tobias Brunner <tobias@strongswan.org> | 2019-02-18 10:49:39 +0100 |
|---|---|---|
| committer |   Steffen Klassert <steffen.klassert@secunet.com> | 2019-02-18 10:58:54 +0100 |
| commit | 660899ddf06ae8bb5bbbd0a19418b739375430c5 (patch) | |
| tree | 0a58af56e93caa1b44f33a43eac97f2ea097f474 /net/xfrm/xfrm_policy.c | |
| parent | af_key: unconditionally clone on broadcast (diff) | |
| download | linux-dev-660899ddf06ae8bb5bbbd0a19418b739375430c5.tar.xz linux-dev-660899ddf06ae8bb5bbbd0a19418b739375430c5.zip | |
xfrm: Fix inbound traffic via XFRM interfaces across network namespaces
After moving an XFRM interface to another namespace it stays associated
with the original namespace (net in `struct xfrm_if` and the list keyed
with `xfrmi_net_id`), allowing processes in the new namespace to use
SAs/policies that were created in the original namespace. For instance,
this allows a keying daemon in one namespace to establish IPsec SAs for
other namespaces without processes there having access to the keys or IKE
credentials.
This worked fine for outbound traffic, however, for inbound traffic the
lookup for the interfaces and the policies used the incorrect namespace
(the one the XFRM interface was moved to).
Fixes: f203b76d7809 ("xfrm: Add virtual xfrm interfaces")
Signed-off-by: Tobias Brunner <tobias@strongswan.org>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm/xfrm_policy.c')
| -rw-r--r-- | net/xfrm/xfrm_policy.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index ba0a4048c846..8d1a898d0ba5 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -3314,8 +3314,10 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, if (ifcb) { xi = ifcb->decode_session(skb); - if (xi) + if (xi) { if_id = xi->p.if_id; + net = xi->net; + } } rcu_read_unlock(); |