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net: add addr len check to dev_mc_add
author
Jiri Pirko
<jpirko@redhat.com>
Wed, 24 Feb 2010 22:49:15 +0000
(22:49 +0000)
committer
David S. Miller
<davem@davemloft.net>
Fri, 26 Feb 2010 12:22:26 +0000
(
04:22
-0800)
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/core/dev_mcast.c
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diff --git
a/net/core/dev_mcast.c
b/net/core/dev_mcast.c
index
9e2fa39
..
fd91569
100644
(file)
--- a/
net/core/dev_mcast.c
+++ b/
net/core/dev_mcast.c
@@
-96,6
+96,8
@@
int dev_mc_add(struct net_device *dev, void *addr, int alen, int glbl)
int err;
netif_addr_lock_bh(dev);
+ if (alen != dev->addr_len)
+ return -EINVAL;
err = __dev_addr_add(&dev->mc_list, &dev->mc_count, addr, alen, glbl);
if (!err)
__dev_set_rx_mode(dev);