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af_packet: do not accept mc address smaller then dev->addr_len in packet_mc_add()

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There is no point of accepting an address of smaller length than dev->addr_len
here. Therefore change this for stonger check.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2010-02-24 23:57:04 +00:00 committed by David S. Miller
parent 2a3f279034
commit 914c8ad2d1
1 changed files with 1 additions and 1 deletions
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2
net/packet/af_packet.c
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@ -1734,7 +1734,7 @@ static int packet_mc_add(struct sock *sk, struct packet_mreq_max *mreq)
goto done;
err = -EINVAL;
if (mreq->mr_alen > dev->addr_len)
if (mreq->mr_alen != dev->addr_len)
goto done;
err = -ENOBUFS;