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Message-Id: <1325007582-31610-10-git-send-email-paul.gortmaker@windriver.com> Date: Tue, 27 Dec 2011 12:39:28 -0500 From: Paul Gortmaker <paul.gortmaker@...driver.com> To: davem@...emloft.net Cc: netdev@...r.kernel.org, allan.stephens@...driver.com, ying.xue@...driver.com, Paul Gortmaker <paul.gortmaker@...driver.com> Subject: [PATCH net-next 09/23] tipc: Ignore neighbor discovery messages containing invalid address From: Allan Stephens <allan.stephens@...driver.com> 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@...driver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com> --- 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 1ea2d44..420e032 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)) -- 1.7.4.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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