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(parent: c085c49) | patch
rtnl: fix info leak on RTM_GETLINK request for VF devices
authorMathias Krause <minipli@googlemail.com>
Sat, 9 Mar 2013 05:52:20 +0000 (05:52 +0000)
committerDavid S. Miller <davem@davemloft.net>
Sun, 10 Mar 2013 09:19:26 +0000 (05:19 -0400)
commit84d73cd3fb142bf1298a8c13fd4ca50fd2432372
tree8575649889787ab0ba141927e4e1d3c1d0c43f68tree | snapshot (tar.gz zip)
parentc085c49920b2f900ba716b4ca1c1a55ece9872cccommit | diff
rtnl: fix info leak on RTM_GETLINK request for VF devices

Initialize the mac address buffer with 0 as the driver specific function
will probably not fill the whole buffer. In fact, all in-kernel drivers
fill only ETH_ALEN of the MAX_ADDR_LEN bytes, i.e. 6 of the 32 possible
bytes. Therefore we currently leak 26 bytes of stack memory to userland
via the netlink interface.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/core/rtnetlink.c diff | blob | blame | history