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net/rds: Fix info leak in rds6_inc_info_copy() 

The rds6_inc_info_copy() function has a couple struct members which
are leaking stack information.  The ->tos field should hold actual
information and the ->flags field needs to be zeroed out.

Fixes: 3eb450367d ("rds: add type of service(tos) infrastructure")
Fixes: b7ff8b1036 ("rds: Extend RDS API for IPv6 support")
Reported-by: 黄ID蝴蝶 <butterflyhuangxx@gmail.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
alistair/sunxi64-5.4-dsi
Ka-Cheong Poon 2019-08-26 02:39:12 -07:00 committed by David S. Miller
parent 2c1644cf6d
commit 7d0a06586b
1 changed files with 4 additions and 1 deletions
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5
net/rds/recv.c
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2006, 2018 Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2006, 2019 Oracle and/or its affiliates. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@ -811,6 +811,7 @@ void rds6_inc_info_copy(struct rds_incoming *inc,
minfo6.seq = be64_to_cpu(inc->i_hdr.h_sequence);
minfo6.len = be32_to_cpu(inc->i_hdr.h_len);
minfo6.tos = inc->i_conn->c_tos;
if (flip) {
minfo6.laddr = *daddr;
@ -824,6 +825,8 @@ void rds6_inc_info_copy(struct rds_incoming *inc,
minfo6.fport = inc->i_hdr.h_dport;
}
minfo6.flags = 0;
rds_info_copy(iter, &minfo6, sizeof(minfo6));
}
#endif