diff options
| author | Thomas Graf <tgraf@suug.ch> | 2014-12-23 01:13:18 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-27 08:18:53 -0800 |
| commit | 7d19bd80c0657f83ca668535ee2e2706e76136ce (patch) | |
| tree | e40934459df88edc114409da451cc0e9b196db48 | |
| parent | 72111ffa1946a7fc2f476265e7237ce2ce654624 (diff) | |
| download | lwn-7d19bd80c0657f83ca668535ee2e2706e76136ce.tar.gz lwn-7d19bd80c0657f83ca668535ee2e2706e76136ce.zip | |
net: Reset secmark when scrubbing packet
[ Upstream commit b8fb4e0648a2ab3734140342002f68fb0c7d1602 ]
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 <tgraf@suug.ch>
Acked-by: Flavio Leitner <fbl@sysclose.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/core/skbuff.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index baf6fc457df9..e2b1bba69882 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -3937,6 +3937,7 @@ void skb_scrub_packet(struct sk_buff *skb, bool xnet) skb->local_df = 0; skb_dst_drop(skb); skb->mark = 0; + skb_init_secmark(skb); secpath_reset(skb); nf_reset(skb); nf_reset_trace(skb); |