rtnetlink: stats: reject requests for unknown stats
In the spirit of strict checks reject requests of stats the kernel
does not support when NETLINK_F_STRICT_CHK is set.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 03d0623..2b4e61b 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -4928,6 +4928,10 @@ static int rtnl_valid_stats_req(const struct nlmsghdr *nlh, bool strict_check,
NL_SET_ERR_MSG(extack, "Invalid attributes after stats header");
return -EINVAL;
}
+ if (ifsm->filter_mask >= IFLA_STATS_FILTER_BIT(IFLA_STATS_MAX + 1)) {
+ NL_SET_ERR_MSG(extack, "Invalid stats requested through filter mask");
+ return -EINVAL;
+ }
return 0;
}