3.16.7-ckt5 -stable review patch. If anyone has any objections, please let me
know.
------------------
From: Thomas Graf <tg...@suug.ch>
commit b8fb4e0648a2ab3734140342002f68fb0c7d1602 upstream.
skb_scrub_packet() is called when a packet switches between a context
such as between underlay and overlay, between namespaces, or between
L3 subnets.
While we already scrub the packet mark, connection tracking entry,
and cached destination, the security mark/context is left intact.
It seems wrong to inherit the security context of a packet when going
from overlay to underlay or across forwarding paths.
Signed-off-by: Thomas Graf <tg...@suug.ch>
Acked-by: Flavio Leitner <f...@sysclose.org>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Luis Henriques <luis.henriq...@canonical.com>
---
net/core/skbuff.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index f5f14d54d6a2..fe07faaed256 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -3933,6 +3933,7 @@ void skb_scrub_packet(struct sk_buff *skb, bool xnet)
skb->ignore_df = 0;
skb_dst_drop(skb);
skb->mark = 0;
+ skb_init_secmark(skb);
secpath_reset(skb);
nf_reset(skb);
nf_reset_trace(skb);
--
2.1.4
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