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authorJiri Pirko <jpirko@redhat.com>2010-02-24 22:49:15 +0000
committerDavid S. Miller <davem@davemloft.net>2010-02-26 04:22:26 -0800
commit6e17d45ae310758ab30623a42ad070858c9a48de (patch)
treebbb23cc9b757a38fcc953f0c862e5ec4b868568e
parentc79c5ffdce14abb4de3878c5aa8c3c6e5093c69b (diff)
net: add addr len check to dev_mc_add
Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/core/dev_mcast.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/dev_mcast.c b/net/core/dev_mcast.c
index 9e2fa39f22a..fd91569e239 100644
--- 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);