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| author | Alexander Yurchenko <a.yurchenko@scalaxy.ru> | 2010-02-19 12:26:34 +0300 |
|---|---|---|
| committer | Stephen Hemminger <stephen.hemminger@vyatta.com> | 2010-03-28 15:56:38 -0700 |
| commit | b79b9a98650cd8018141874d2a5e59c1cd78ea3c (patch) | |
| tree | da76a9baf0d1ee3aac1536ffa89a49c4043a9aab | |
| parent | 18da741b5f843f196b7a1ba8d85da8506a1a58f6 (diff) | |
| download | rstp-b79b9a98650cd8018141874d2a5e59c1cd78ea3c.tar.gz | |
Fix null pointer dereference in bridge_bpdu_rcv
Check that the interface on which bpdu was received is actually
a bridge port. It's possible to receive an STP packet on
a bridge interface itself if the bridge has STP disabled
and forwards STP traffic.
Signed-off-by: Alexander Yurchenko <a.yurchenko@scalaxy.ru>
| -rw-r--r-- | bridge_track.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/bridge_track.c b/bridge_track.c index be555de..f08c9f6 100644 --- a/bridge_track.c +++ b/bridge_track.c @@ -579,7 +579,7 @@ void bridge_bpdu_rcv(int if_index, const unsigned char *data, int len) BPDU_T *bpdu = (BPDU_T *) (data + sizeof(MAC_HEADER_T)); LOG("ifindex %d, len %d", if_index, len); - if (!ifc) + if (!ifc || !ifc->master) return; TST(ifc->up,); |