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ife: error out when nla attributes are empty

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[ Upstream commit c8ec4632c6ac9cda0e8c3d51aa41eeab66585bd5 ]

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>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Cong Wang 2019-07-22 21:43:00 -07:00 committed by Greg Kroah-Hartman
parent dfb98836f9
commit 264e020e26
1 changed files with 3 additions and 0 deletions
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3
net/sched/act_ife.c
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@ -477,6 +477,9 @@ static int tcf_ife_init(struct net *net, struct nlattr *nla,
int ret = 0;
int err;
if (!nla)
return -EINVAL;
err = nla_parse_nested(tb, TCA_IFE_MAX, nla, ife_policy);
if (err < 0)
return err;