luck/tmp_suning_uos_patched
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

tipc: Reject payload messages with invalid message type

Browse Source 
Adds check to ensure TIPC sockets reject incoming payload messages
that have an unrecognized message type.

Remove the old open question about whether TIPC_ERR_NO_PORT is
the proper return value.  It is appropriate here since there are
valid instances where another node can make use of the reply,
and at this point in time the host is already broadcasting TIPC
data, so there are no real security concerns.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
This commit is contained in:
Allan Stephens 2012-04-26 18:13:08 -04:00 committed by Paul Gortmaker
parent 8f17789693
commit aad585473f
1 changed files with 2 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
net/tipc/socket.c
View File

@ -1223,11 +1223,8 @@ static u32 filter_rcv(struct sock *sk, struct sk_buff *buf)
/* Reject message if it is wrong sort of message for socket */
/*
* WOULD IT BE BETTER TO JUST DISCARD THESE MESSAGES INSTEAD?
* "NO PORT" ISN'T REALLY THE RIGHT ERROR CODE, AND THERE MAY
* BE SECURITY IMPLICATIONS INHERENT IN REJECTING INVALID TRAFFIC
*/
if (msg_type(msg) > TIPC_DIRECT_MSG)
return TIPC_ERR_NO_PORT;
if (sock->state == SS_READY) {
if (msg_connected(msg))