[PATCH] mt76: mt7915: fix an off-by-one bound check
From: Ryder Lee <ryder.lee@mediatek.com>
Date: 2021-07-14 07:56:22
Also in:
linux-mediatek
Subsystem:
mediatek mt76 wireless lan driver, the rest · Maintainers:
Felix Fietkau, Lorenzo Bianconi, Ryder Lee, Linus Torvalds
The bounds check on datalen is off-by-one, so fix it. Signed-off-by: Ryder Lee <ryder.lee@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