tree bc6ccd35725dddd0b299372947f09532f9f44a74
parent 50a75a8914539c5dcd441c5f54d237a666a426fd
author Mathias Krause <minipli@googlemail.com> 1365299507 +0000
committer David S. Miller <davem@davemloft.net> 1365366480 -0400

atm: update msg_namelen in vcc_recvmsg()

The current code does not fill the msg_name member in case it is set.
It also does not set the msg_namelen member to 0 and therefore makes
net/socket.c leak the local, uninitialized sockaddr_storage variable
to userland -- 128 bytes of kernel stack memory.

Fix that by simply setting msg_namelen to 0 as obviously nobody cared
about vcc_recvmsg() not filling the msg_name in case it was set.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>