netdev - [PATCH net 1/2] net/sched: matchall: add missing validation of TCA_MATCHALL

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Message-Id: <7e829916e02af56770745c30cac8cb3fc9dfdc5c.1581444848.git.dcaratti@redhat.com>
Date:   Tue, 11 Feb 2020 19:33:39 +0100
From:   Davide Caratti <dcaratti@...hat.com>
To:     Amir Vadai <amir@...ai.me>, Yotam Gigi <yotamg@...lanox.com>,
        Jiri Pirko <jiri@...lanox.com>,
        "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org
Subject: [PATCH net 1/2] net/sched: matchall: add missing validation of TCA_MATCHALL_FLAGS

unlike other classifiers that can be offloaded (i.e. users can set flags
like 'skip_hw' and 'skip_sw'), 'cls_matchall' doesn't validate the size
of netlink attribute 'TCA_MATCHALL_FLAGS' provided by user: add a proper
entry to mall_policy.

Fixes: b87f7936a932 ("net/sched: Add match-all classifier hw offloading.")
Signed-off-by: Davide Caratti <dcaratti@...hat.com>
---
 net/sched/cls_matchall.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/sched/cls_matchall.c b/net/sched/cls_matchall.c
index 039cc86974f4..610a0b728161 100644
--- a/net/sched/cls_matchall.c
+++ b/net/sched/cls_matchall.c
@@ -157,6 +157,7 @@ static void *mall_get(struct tcf_proto *tp, u32 handle)
 static const struct nla_policy mall_policy[TCA_MATCHALL_MAX + 1] = {
 	[TCA_MATCHALL_UNSPEC]		= { .type = NLA_UNSPEC },
 	[TCA_MATCHALL_CLASSID]		= { .type = NLA_U32 },
+	[TCA_MATCHALL_FLAGS]		= { .type = NLA_U32 },
 };
 
 static int mall_set_parms(struct net *net, struct tcf_proto *tp,
-- 
2.24.1