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| author | Frank van der Linden <fllinden@amazon.com> | 2018-06-13 02:09:37 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-06-15 03:04:41 +0300 |
| commit | 4fd44a98ffe0d048246efef67ed640fdf2098a62 (patch) | |
| tree | f579372ac46831d702ee8b3bc08f6cf3e463ca91 /net/ipv4/gre_offload.c | |
| parent | bdf767cae3dddcb50a9ca09d01bb79df3e384f7b (diff) | |
| download | linux-4fd44a98ffe0d048246efef67ed640fdf2098a62.tar.xz | |
tcp: verify the checksum of the first data segment in a new connection
commit 079096f103fa ("tcp/dccp: install syn_recv requests into ehash
table") introduced an optimization for the handling of child sockets
created for a new TCP connection.
But this optimization passes any data associated with the last ACK of the
connection handshake up the stack without verifying its checksum, because it
calls tcp_child_process(), which in turn calls tcp_rcv_state_process()
directly. These lower-level processing functions do not do any checksum
verification.
Insert a tcp_checksum_complete call in the TCP_NEW_SYN_RECEIVE path to
fix this.
Fixes: 079096f103fa ("tcp/dccp: install syn_recv requests into ehash table")
Signed-off-by: Frank van der Linden <fllinden@amazon.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Balbir Singh <bsingharora@gmail.com>
Reviewed-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/gre_offload.c')
0 files changed, 0 insertions, 0 deletions