From: Cong Wang xiyou.wangcong@gmail.com
[ 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 --- net/sched/act_ife.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/net/sched/act_ife.c +++ b/net/sched/act_ife.c @@ -477,6 +477,9 @@ static int tcf_ife_init(struct net *net, 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;