[PATCH] mt76: mt7915: fix an off-by-one bound check

Ryder Lee ryder.lee at mediatek.com
Wed Jul 14 00:56:10 PDT 2021


The bounds check on datalen is off-by-one, so fix it.

Signed-off-by: Ryder Lee <ryder.lee at mediatek.com>
---
 drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 8d646aa3d084..81e4165905dc 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -776,7 +776,7 @@ static void mt7915_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy,
 	rcu_read_lock();
 	elem = ieee80211_bss_get_elem(bss, WLAN_EID_EXT_CAPABILITY);
 
-	if (!elem || elem->datalen < 10 ||
+	if (!elem || elem->datalen <= 10 ||
 	    !(elem->data[10] &
 	      WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT))
 		data->tolerated = false;
-- 
2.29.2


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