On 9/19/23 11:12, Johannes Nixdorf wrote:
Set any new attributes added to br_policy to be parsed strictly, to
prevent userspace from passing garbage.
Signed-off-by: Johannes Nixdorf <jnixdorf-oss@xxxxxx>
---
net/bridge/br_netlink.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 10f0d33d8ccf..505683ef9a26 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -1229,6 +1229,8 @@ static size_t br_port_get_slave_size(const struct net_device *brdev,
}
static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
+ [IFLA_BR_UNSPEC] = { .strict_start_type =
+ IFLA_BR_MCAST_QUERIER_STATE + 1 },
[IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
[IFLA_BR_HELLO_TIME] = { .type = NLA_U32 },
[IFLA_BR_MAX_AGE] = { .type = NLA_U32 },
instead of IFLA_BR_MCAST_QUERIER_STATE + 1, why not move around the
patch and just use the new attribute name?
These are uapi, they won't change.
