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| author | Eli Cooper <elicooper@gmx.com> | 2016-11-01 18:45:12 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-02 22:18:36 +0300 |
| commit | 23f4ffedb7d751c7e298732ba91ca75d224bc1a6 (patch) | |
| tree | 321347ff8bd924a8c5cbca50318e96e8e9375fa3 /net/ipv6/ip6_udp_tunnel.c | |
| parent | 45788f1f5534fb02063ca077719592c2c3ba621e (diff) | |
| download | linux-23f4ffedb7d751c7e298732ba91ca75d224bc1a6.tar.xz | |
ip6_tunnel: Clear IP6CB in ip6tunnel_xmit()
skb->cb may contain data from previous layers. In the observed scenario,
the garbage data were misinterpreted as IP6CB(skb)->frag_max_size, so
that small packets sent through the tunnel are mistakenly fragmented.
This patch unconditionally clears the control buffer in ip6tunnel_xmit(),
which affects ip6_tunnel, ip6_udp_tunnel and ip6_gre. Currently none of
these tunnels set IP6CB(skb)->flags, otherwise it needs to be done earlier.
Cc: stable@vger.kernel.org
Signed-off-by: Eli Cooper <elicooper@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_udp_tunnel.c')
0 files changed, 0 insertions, 0 deletions