From 99c145939bc1f65f9b946f2b9dd7bfc1f44783d6 Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Wed, 4 Jun 2008 17:48:25 -0700 Subject: [PATCH] tipc: Fix bugs in rejection of message with short header This patch ensures that TIPC doesn't try to access non-existent message header fields when rejecting a message with a short header. Signed-off-by: Allan Stephens Signed-off-by: David S. Miller --- net/tipc/port.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/net/tipc/port.c b/net/tipc/port.c index 93014f9bc95f..2e0cff408ff9 100644 --- a/net/tipc/port.c +++ b/net/tipc/port.c @@ -448,13 +448,15 @@ int tipc_reject_msg(struct sk_buff *buf, u32 err) msg_set_errcode(rmsg, err); msg_set_destport(rmsg, msg_origport(msg)); msg_set_origport(rmsg, msg_destport(msg)); - if (msg_short(msg)) + if (msg_short(msg)) { msg_set_orignode(rmsg, tipc_own_addr); - else + /* leave name type & instance as zeroes */ + } else { msg_set_orignode(rmsg, msg_destnode(msg)); + msg_set_nametype(rmsg, msg_nametype(msg)); + msg_set_nameinst(rmsg, msg_nameinst(msg)); + } msg_set_size(rmsg, data_sz + hdr_sz); - msg_set_nametype(rmsg, msg_nametype(msg)); - msg_set_nameinst(rmsg, msg_nameinst(msg)); skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); /* send self-abort message when rejecting on a connected port */ -- 2.30.2