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(parent: 914bec1) | patch
net: sock: validate data_len before allocating skb in sock_alloc_send_pskb()
authorJason Wang <jasowang@redhat.com>
Wed, 30 May 2012 21:18:10 +0000 (21:18 +0000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 31 May 2012 22:22:45 +0000 (18:22 -0400)
commitcc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc
treedbf402b10788ab22d1d9d8c14866a910be497c29tree | snapshot
parent914bec1011a25f65cdc94988a6f974bfb9a3c10dcommit | 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>
net/core/sock.c diff | blob | history
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