tree dbf402b10788ab22d1d9d8c14866a910be497c29
parent 914bec1011a25f65cdc94988a6f974bfb9a3c10d
author Jason Wang <jasowang@redhat.com> 1338412690 +0000
committer David S. Miller <davem@davemloft.net> 1338502965 -0400

net: sock: validate data_len before allocating skb in sock_alloc_send_pskb()

We need to validate the number of pages consumed by data_len, otherwise frags
array could be overflowed by userspace. So this patch validate data_len and
return -EMSGSIZE when data_len may occupies more frags than MAX_SKB_FRAGS.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>