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[AF_NETLINK]: Fix DoS in netlink_rcv_skb()
authorMartin Murray <murrayma@citi.umich.edu>
Tue, 10 Jan 2006 21:02:29 +0000 (13:02 -0800)
committerDavid S. Miller <davem@davemloft.net>
Tue, 10 Jan 2006 21:02:29 +0000 (13:02 -0800)
From: Martin Murray <murrayma@citi.umich.edu>

Sanity check nlmsg_len during netlink_rcv_skb.  An nlmsg_len == 0 can
cause infinite loop in kernel, effectively DoSing machine.  Noted by
Matin Murray.

Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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