cfg80211: mark regdomains with > NL80211_MAX_SUPP_REG_RULES invalid

Lets remain consistent and mark rds with > NL80211_MAX_SUPP_REG_RULES
number of reg rules as invalid in is_valid_rd().

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index f8e7beb23add..f0ff3d1779da 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -352,6 +352,9 @@ static bool is_valid_rd(const struct ieee80211_regdomain *rd)
         if (!rd->n_reg_rules)
                 return false;
 
+        if (WARN_ON(rd->n_reg_rules > NL80211_MAX_SUPP_REG_RULES))
+                return false;
+
         for (i = 0; i < rd->n_reg_rules; i++) {
                 reg_rule = &rd->reg_rules[i];
                 if (!is_valid_reg_rule(reg_rule))