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| author | Patrick McHardy <kaber@trash.net> | 2009-12-15 16:59:59 +0100 |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2009-12-15 16:59:59 +0100 |
| commit | 8fa9ff6849bb86c59cc2ea9faadf3cb2d5223497 (patch) | |
| tree | 42c1cc382a9cfbb2907ab1471418404f874d53f2 /include/net/ipv6.h | |
| parent | 0b5ccb2ee250136dd7385b1c7da28417d0d4d32d (diff) | |
| download | lwn-8fa9ff6849bb86c59cc2ea9faadf3cb2d5223497.tar.gz lwn-8fa9ff6849bb86c59cc2ea9faadf3cb2d5223497.zip | |
netfilter: fix crashes in bridge netfilter caused by fragment jumps
When fragments from bridge netfilter are passed to IPv4 or IPv6 conntrack
and a reassembly queue with the same fragment key already exists from
reassembling a similar packet received on a different device (f.i. with
multicasted fragments), the reassembled packet might continue on a different
codepath than where the head fragment originated. This can cause crashes
in bridge netfilter when a fragment received on a non-bridge device (and
thus with skb->nf_bridge == NULL) continues through the bridge netfilter
code.
Add a new reassembly identifier for packets originating from bridge
netfilter and use it to put those packets in insolated queues.
Fixes http://bugzilla.kernel.org/show_bug.cgi?id=14805
Reported-and-Tested-by: Chong Qiao <qiaochong@loongson.cn>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'include/net/ipv6.h')
| -rw-r--r-- | include/net/ipv6.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h index d6916035bcea..ccab5946c830 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -354,6 +354,7 @@ enum ip6_defrag_users { IP6_DEFRAG_LOCAL_DELIVER, IP6_DEFRAG_CONNTRACK_IN, IP6_DEFRAG_CONNTRACK_OUT, + IP6_DEFRAG_CONNTRACK_BRIDGE_IN, }; struct ip6_create_arg { |