[patch] net_sched: stack info leak in cbq_dump_wrr()

Dan Carpenter
2013-07-29T19:36:51Z

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

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.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;