netdev - [patch] net_sched: stack info leak in cbq_dump

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Message-ID: <20130729193651.GA12525@elgon.mountain>
Date:	Mon, 29 Jul 2013 22:36:51 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Jamal Hadi Salim <jhs@...atatu.com>
Cc:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [patch] net_sched: stack info leak in cbq_dump_wrr()

opt.__reserved isn't cleared so we leak a byte of stack information.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index 71a5688..6398a61 100644
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -1469,6 +1469,7 @@ static int cbq_dump_wrr(struct sk_buff *skb, struct cbq_class *cl)
 	opt.allot = cl->allot;
 	opt.priority = cl->priority + 1;
 	opt.cpriority = cl->cpriority + 1;
+	opt.__reserved = 0;
 	opt.weight = cl->weight;
 	if (nla_put(skb, TCA_CBQ_WRROPT, sizeof(opt), &opt))
 		goto nla_put_failure;
--
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