Commit 3aa4614d authored by Patrick McHardy's avatar Patrick McHardy Committed by David S. Miller
Browse files

pkt_sched: fix missing check for packet overrun in qdisc_dump_stab() 



nla_nest_start() might return NULL, causing a NULL pointer dereference.

Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f7f65d1e

net/sched/sch_api.c

+2 −0
Original line number Diff line number Diff line
@@ -417,6 +417,8 @@ static int qdisc_dump_stab(struct sk_buff *skb, struct qdisc_size_table *stab) 
	struct nlattr *nest;



	nest = nla_nest_start(skb, TCA_STAB);

	if (nest == NULL)

		goto nla_put_failure;

	NLA_PUT(skb, TCA_STAB_BASE, sizeof(stab->szopts), &stab->szopts);

	nla_nest_end(skb, nest);