mac80211: off by one in mcs mask handling

"ridx" is used as an index into the mcs_mask[] array which has
IEEE80211_HT_MCS_MASK_LEN elements.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index f1681e2c5949..fe2747653564 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -5410,7 +5410,7 @@ static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
                 rbit = BIT(rates[i] % 8);
 
                 /* check validity */
-                if ((ridx < 0) || (ridx > IEEE80211_HT_MCS_MASK_LEN))
+                if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
                         return false;
 
                 /* check availability */