[PATCH 5.10 226/575] mt76: mt7915: fix an off-by-one bound check

From: Greg Kroah-Hartman
Date: Mon Nov 15 2021 - 14:40:40 EST


From: Ryder Lee <ryder.lee@xxxxxxxxxxxx>

[ Upstream commit d45dac0732a287fc371a23f257cce04e65627947 ]

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

Signed-off-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 ea71409751519..7c2d09a64882e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -830,7 +830,7 @@ static void mt7915_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy,

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;
--
2.33.0