sctp: sctp_addr_id2transport should verify the addr before looking up assoc

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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@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Xin Long 2017-01-24 14:01:53 +08:00 • committed by David S. Miller

parent ec221a17a6

commit 6f29a13061

1 changed files with 5 additions and 1 deletions

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net/sctp/socket.c

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