linux-kernel - [PATCH] net: fix potential infoleak in rds_inc_info

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Message-Id: <1464797476-26596-1-git-send-email-kjlu@gatech.edu>
Date:	Wed,  1 Jun 2016 12:11:16 -0400
From:	Kangjie Lu <kangjielu@...il.com>
To:	santosh.shilimkar@...cle.com
Cc:	davem@...emloft.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, taesoo@...ech.edu,
	csong84@...ech.edu, Kangjie Lu <kjlu@...ech.edu>
Subject: [PATCH] net: fix potential infoleak in rds_inc_info_copy

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@...ech.edu>
---
 net/rds/recv.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/rds/recv.c b/net/rds/recv.c
index c0be1ec..8413f6c 100644
--- a/net/rds/recv.c
+++ b/net/rds/recv.c
@@ -561,5 +561,7 @@ 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));
 }
-- 
2.7.4