Thread (8 messages) flat view 8 messages, 2 authors, 2014-05-09
STALE4471d

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[PATCH 4/6] ipv4: fix "conntrack zones" support for defrag user check in ip_expire

From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: 2014-05-09 10:56:05
Also in: netfilter-devel
Subsystem: networking [general], networking [ipv4/ipv6], the rest · Maintainers: "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds 

From: Vasily Averin <redacted>

Defrag user check in ip_expire was not updated after adding support for
"conntrack zones".

This bug manifests as a RFC violation, since the router will send
the icmp time exceeeded message when using conntrack zones.

Signed-off-by: Vasily Averin <redacted>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 net/ipv4/ip_fragment.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index c10a3ce..ed32313 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -232,8 +232,9 @@ static void ip_expire(unsigned long arg)
 		 * "Fragment Reassembly Timeout" message, per RFC792.
 		 */
 		if (qp->user == IP_DEFRAG_AF_PACKET ||
-		    (qp->user == IP_DEFRAG_CONNTRACK_IN &&
-		     skb_rtable(head)->rt_type != RTN_LOCAL))
+		    ((qp->user >= IP_DEFRAG_CONNTRACK_IN) &&
+		     (qp->user <= __IP_DEFRAG_CONNTRACK_IN_END) &&
+		     (skb_rtable(head)->rt_type != RTN_LOCAL)))
 			goto out_rcu_unlock;
 
 
-- 
1.7.10.4
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