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| author | Thomas Graf <tgraf@suug.ch> | 2015-01-14 16:56:19 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-01-15 00:49:44 +0300 |
| commit | 1ba398041f5b5a15456ea20a9ba3ff80b6a4e7d1 (patch) | |
| tree | 11d8bc5cd83cdad417a1c4d5863a756023480f1d /net/openvswitch | |
| parent | 776d4e9f5c0229037707f692b386b1f2a5bac054 (diff) | |
| download | linux-1ba398041f5b5a15456ea20a9ba3ff80b6a4e7d1.tar.xz | |
openvswitch: packet messages need their own probe attribtue
User space is currently sending a OVS_FLOW_ATTR_PROBE for both flow
and packet messages. This leads to an out-of-bounds access in
ovs_packet_cmd_execute() because OVS_FLOW_ATTR_PROBE >
OVS_PACKET_ATTR_MAX.
Introduce a new OVS_PACKET_ATTR_PROBE with the same numeric value
as OVS_FLOW_ATTR_PROBE to grow the range of accepted packet attributes
while maintaining to be binary compatible with existing OVS binaries.
Fixes: 05da589 ("openvswitch: Add support for OVS_FLOW_ATTR_PROBE.")
Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Tracked-down-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/openvswitch')
| -rw-r--r-- | net/openvswitch/datapath.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index 4e9a5f035cbc..b07349e82d78 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -524,7 +524,7 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) struct vport *input_vport; int len; int err; - bool log = !a[OVS_FLOW_ATTR_PROBE]; + bool log = !a[OVS_PACKET_ATTR_PROBE]; err = -EINVAL; if (!a[OVS_PACKET_ATTR_PACKET] || !a[OVS_PACKET_ATTR_KEY] || @@ -610,6 +610,7 @@ static const struct nla_policy packet_policy[OVS_PACKET_ATTR_MAX + 1] = { [OVS_PACKET_ATTR_PACKET] = { .len = ETH_HLEN }, [OVS_PACKET_ATTR_KEY] = { .type = NLA_NESTED }, [OVS_PACKET_ATTR_ACTIONS] = { .type = NLA_NESTED }, + [OVS_PACKET_ATTR_PROBE] = { .type = NLA_FLAG }, }; static const struct genl_ops dp_packet_genl_ops[] = { |