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ife: error out when nla attributes are empty 

act_ife at least requires TCA_IFE_PARMS, so we have to bail out
when there is no attribute passed in.

Reported-by: syzbot+fbb5b288c9cb6a2eeac4@syzkaller.appspotmail.com
Fixes: ef6980b6be ("introduce IFE action")
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Cong Wang 2019-07-22 21:43:00 -07:00 committed by David S. Miller
parent 4638faac03
commit c8ec4632c6
1 changed files with 5 additions and 0 deletions
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5
net/sched/act_ife.c
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@ -481,6 +481,11 @@ static int tcf_ife_init(struct net *net, struct nlattr *nla,
int ret = 0;
int err;
if (!nla) {
NL_SET_ERR_MSG_MOD(extack, "IFE requires attributes to be passed");
return -EINVAL;
}
err = nla_parse_nested_deprecated(tb, TCA_IFE_MAX, nla, ife_policy,
NULL);
if (err < 0)