OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

net_sched: sch_skbprio: add message validation to skbprio_change() 

Do not assume the attribute has the right size.

Fixes: aea5f654e6 ("net/sched: add skbprio scheduler")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2020-05-02 20:09:25 -07:00 committed by David S. Miller
parent dc30b4059f
commit 2761121af8
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
net/sched/sch_skbprio.c
View File

@ -169,6 +169,9 @@ static int skbprio_change(struct Qdisc *sch, struct nlattr *opt,
{
struct tc_skbprio_qopt *ctl = nla_data(opt);
if (opt->nla_len != nla_attr_size(sizeof(*ctl)))
return -EINVAL;
sch->limit = ctl->limit;
return 0;
}