Mathias Krause 1091d7dddb NFC: llcp: fix info leaks via msg_name in llcp_sock_recvmsg() ... [ Upstream commit d26d6504f2 ] The code in llcp_sock_recvmsg() does not initialize all the members of struct sockaddr_nfc_llcp when filling the sockaddr info. Nor does it initialize the padding bytes of the structure inserted by the compiler for alignment. Also, if the socket is in state LLCP_CLOSED or is shutting down during receive the msg_namelen member is not updated to 0 while otherwise returning with 0, i.e. "success". The msg_namelen update is also missing for stream and seqpacket sockets which don't fill the sockaddr info. Both issues lead to the fact that the code will leak uninitialized kernel stack bytes in net/socket.c. Fix the first issue by initializing the memory used for sockaddr info with memset(0). Fix the second one by setting msg_namelen to 0 early. It will be updated later if we're going to fill the msg_name member. Signed-off-by: Mathias Krause <minipli@googlemail.com> Cc: Lauro Ramos Venancio <lauro.venancio@openbossa.org> Cc: Aloisio Almeida Jr <aloisio.almeida@openbossa.org> Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-05-01 09:41:05 -07:00
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commands.c	NFC: Fix the LLCP Tx fragmentation loop	2012-04-11 15:09:33 -04:00
Kconfig
llcp.c	NFC: Fix nfc_llcp_local chained list insertion	2012-12-03 11:47:12 -08:00
llcp.h	NFC: LLCP code identation fixes	2012-03-06 15:16:24 -05:00
sock.c	NFC: llcp: fix info leaks via msg_name in llcp_sock_recvmsg()	2013-05-01 09:41:05 -07:00