Re: [PATCH net] sctp: sctp_addr_id2transport should verify the addr before looking up assoc

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From: Xin Long <lucien.xin@xxxxxxxxx>
Date: Tue, 24 Jan 2017 14:01:53 +0800

> sctp_addr_id2transport is a function for sockopt to look up assoc by
> address. As the address is from userspace, it can be a v4-mapped v6
> address. But in sctp protocol stack, it always handles a v4-mapped
> v6 address as a v4 address. So it's necessary to convert it to a v4
> address before looking up assoc by address.
> 
> This patch is to fix it by calling sctp_verify_addr in which it can do
> this conversion before calling sctp_endpoint_lookup_assoc, just like
> what sctp_sendmsg and __sctp_connect do for the address from users.
> 
> Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx>

Applied.
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