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authorAllan Stephens <allan.stephens@windriver.com>2011-10-07 23:48:41 +0400
committerPaul Gortmaker <paul.gortmaker@windriver.com>2011-12-27 20:33:38 +0400
commitd6d4577ae48bcfde06894540ea793abf076e1643 (patch)
tree06521d98dec233bf68190ba2a017684ece5aa1c7 /net/tipc/discover.c
parent3d749a6a26b0811b4b2bb4ec2c47cd630a6bbf88 (diff)
downloadlinux-d6d4577ae48bcfde06894540ea793abf076e1643.tar.xz
tipc: Ignore neighbor discovery messages containing invalid address
Adds a check to ensure that TIPC ignores an incoming neighbor discovery message that specifies an invalid media address as its source. The check ensures that the source address is a valid, non-broadcast address that could legally be used by a neighboring link endpoint. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'net/tipc/discover.c')
-rw-r--r--net/tipc/discover.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index 1ea2d44bbc36..420e0329036b 100644
--- a/net/tipc/discover.c
+++ b/net/tipc/discover.c
@@ -130,12 +130,15 @@ void tipc_disc_recv_msg(struct sk_buff *buf, struct tipc_bearer *b_ptr)
u32 type = msg_type(msg);
int link_fully_up;
+ media_addr.broadcast = 1;
b_ptr->media->msg2addr(&media_addr, msg_media_addr(msg));
buf_discard(buf);
/* Validate discovery message from requesting node */
if (net_id != tipc_net_id)
return;
+ if (media_addr.broadcast)
+ return;
if (!tipc_addr_domain_valid(dest))
return;
if (!tipc_addr_node_valid(orig))