From: Ma Ke Date: Tue, 13 Aug 2024 08:12:42 +0000 (+0800) Subject: wifi: mt76: mt7996: fix NULL pointer dereference in mt7996_mcu_sta_bfer_he X-Git-Tag: v6.10.13~87 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=174c803b432596cdd7dd3ec5e0ec52b561969ee2;p=thirdparty%2Fkernel%2Fstable.git wifi: mt76: mt7996: fix NULL pointer dereference in mt7996_mcu_sta_bfer_he commit f503ae90c7355e8506e68498fe84c1357894cd5b upstream. Fix the NULL pointer dereference in mt7996_mcu_sta_bfer_he routine adding an sta interface to the mt7996 driver. Found by code review. Cc: stable@vger.kernel.org Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices") Signed-off-by: Ma Ke Link: https://patch.msgid.link/20240813081242.3991814-1-make24@iscas.ac.cn Signed-off-by: Felix Fietkau Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c index 9176905451b50..36ab59885cf2b 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c @@ -1544,6 +1544,9 @@ mt7996_mcu_sta_bfer_he(struct ieee80211_sta *sta, struct ieee80211_vif *vif, u8 nss_mcs = mt7996_mcu_get_sta_nss(mcs_map); u8 snd_dim, sts; + if (!vc) + return; + bf->tx_mode = MT_PHY_TYPE_HE_SU; mt7996_mcu_sta_sounding_rate(bf);