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authorMathias Krause <minipli@googlemail.com>2013-04-07 01:52:00 +0000
committerDavid S. Miller <davem@davemloft.net>2013-04-07 16:28:02 -0400
commit60085c3d009b0df252547adb336d1ccca5ce52ec (patch)
treedf28e7547fc540f59df2afc7e6e66cd0df42f265 /net/vmw_vsock
parent4a184233f21645cf0b719366210ed445d1024d72 (diff)
tipc: fix info leaks via msg_name in recv_msg/recv_stream
The code in set_orig_addr() does not initialize all of the members of struct sockaddr_tipc when filling the sockaddr info -- namely the union is only partly filled. This will make recv_msg() and recv_stream() -- the only users of this function -- leak kernel stack memory as the msg_name member is a local variable in net/socket.c. Additionally to that both recv_msg() and recv_stream() fail to update the msg_namelen member to 0 while otherwise returning with 0, i.e. "success". This is the case for, e.g., non-blocking sockets. This will lead to a 128 byte kernel stack leak in net/socket.c. Fix the first issue by initializing the memory of the union with memset(0). Fix the second one by setting msg_namelen to 0 early as it will be updated later if we're going to fill the msg_name member. Cc: Jon Maloy <jon.maloy@ericsson.com> Cc: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/vmw_vsock')
0 files changed, 0 insertions, 0 deletions

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