[PATCH 5.15 272/917] mt76: mt7915: fix an off-by-one bound check

Greg Kroah-Hartman
2021-11-16T00:56:16Z

From: Ryder Lee <ryder.lee@mediatek.com>

[ Upstream commit d45dac0732a287fc371a23f257cce04e65627947 ]

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

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 43960770a9af2..2f30047bd80f2 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -925,7 +925,7 @@ 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