From: Kangjie Lu <kangjielu@gmail.com>
Date: Thu, 2 Jun 2016 08:11:20 +0000 (-0400)
Subject: rds: fix an infoleak in rds_inc_info_copy
X-Git-Tag: firefly_0821_release~176^2~4^2~31^2~36
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ffd5ce2ad5fd140ddd492ab2064e29e86aaa64ea;p=firefly-linux-kernel-4.4.55.git

rds: fix an infoleak in rds_inc_info_copy

commit 4116def2337991b39919f3b448326e21c40e0dbb upstream.

The last field "flags" of object "minfo" is not initialized.
Copying this object out may leak kernel stack data.
Assign 0 to it to avoid leak.

Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Juerg Haefliger <juerg.haefliger@hpe.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/rds/recv.c b/net/rds/recv.c
index a00462b0d01d..0514af3ab378 100644
--- a/net/rds/recv.c
+++ b/net/rds/recv.c
@@ -545,5 +545,7 @@ void rds_inc_info_copy(struct rds_incoming *inc,
 		minfo.fport = inc->i_hdr.h_dport;
 	}
 
+	minfo.flags = 0;
+
 	rds_info_copy(iter, &minfo, sizeof(minfo));
 }