diff options
author | Frank van der Linden <fllinden@amazon.com> | 2018-06-12 23:09:37 +0000 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-03 11:21:25 +0200 |
commit | 48ffbdea28808354b89447fac2d8524c29ce7ab4 (patch) | |
tree | 009d0d382fb6d34bb358a8a62ff959e342e21f74 /fs/ext4 | |
parent | b397cdd8546916f86959b5942cc79204f9c93b80 (diff) |
tcp: verify the checksum of the first data segment in a new connection
[ Upstream commit 4fd44a98ffe0d048246efef67ed640fdf2098a62 ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ext4')
0 files changed, 0 insertions, 0 deletions