| Message ID | 20190723044300.16143-1-xiyou.wangcong@gmail.com |
|---|---|
| State | Accepted |
| Delegated to: | David Miller |
| Headers | show |
| Series | [net] ife: error out when nla attributes are empty | expand |
From: Cong Wang <xiyou.wangcong@gmail.com> Date: Mon, 22 Jul 2019 21:43:00 -0700 > 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: ef6980b6becb ("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> Applied and queued up for -stable.
diff --git a/net/sched/act_ife.c b/net/sched/act_ife.c index 41d5398dd2f2..3578196d1600 100644 --- a/net/sched/act_ife.c +++ b/net/sched/act_ife.c @@ -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)
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: ef6980b6becb ("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> --- net/sched/act_ife.c | 5 +++++ 1 file changed, 5 insertions(+)