net: fix a kernel infoleak in x25 module
commita1f85b3a66d74389417e86505013e51a06b789f0
authorKangjie Lu <kangjielu@gmail.com>
Sun, 8 May 2016 16:10:14 +0000 (8 12:10 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 19 May 2016 00:04:01 +0000 (18 17:04 -0700)
tree9dec5502e35d6b974e5b731d213a6a4adbba4727
parent4e89b76588e7fa923fe0b8cba1145646036289bd
net: fix a kernel infoleak in x25 module

[ Upstream commit 79e48650320e6fba48369fccf13fd045315b19b8 ]

Stack object "dte_facilities" is allocated in x25_rx_call_request(),
which is supposed to be initialized in x25_negotiate_facilities.
However, 5 fields (8 bytes in total) are not initialized. This
object is then copied to userland via copy_to_user, thus infoleak
occurs.

Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/x25/x25_facilities.c