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authorJason Wang <jasowang@redhat.com>2012-05-30 21:18:10 +0000
committerDavid S. Miller <davem@davemloft.net>2012-05-31 18:22:45 -0400
commitcc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc (patch)
treedbf402b10788ab22d1d9d8c14866a910be497c29 /include
parent914bec1011a25f65cdc94988a6f974bfb9a3c10d (diff)
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>
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