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| author | Allan Stephens <allan.stephens@windriver.com> | 2011-10-07 21:48:41 +0200 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2011-12-27 17:33:38 +0100 |
| commit | d6d4577ae48bcfde06894540ea793abf076e1643 (patch) | |
| tree | 06521d98dec233bf68190ba2a017684ece5aa1c7 | |
| parent | tipc: Hide media-specific addressing details from generic bearer code (diff) | |
| download | linux-d6d4577ae48bcfde06894540ea793abf076e1643.tar.xz linux-d6d4577ae48bcfde06894540ea793abf076e1643.zip | |
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>
| -rw-r--r-- | net/tipc/discover.c | 3 |
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)) |