| Message ID | 20241002213919.30360-1-zichenxie0106@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Felix Fietkau |
| Headers | show |
| Series | wifi: mt76: Fix NULL Dereference caused by mt76_connac_get_he_phy_cap() | expand |
On 02/10/2024 23:39, Gax-c wrote: > mt76_connac_get_he_phy_cap() may return a NULL pointer, > leading to NULL Pointer Dereference. > Add a NULL check for the returned pointer. > > Fixes: a5c372f77aa7 ("wifi: mt76: mt7925: extend mt7925_mcu_bss_he_tlv for per-link BSS") > Fixes: e6d557a78b60 ("mt76: mt7915: rely on mt76_connac_get_phy utilities") > Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices") > Signed-off-by: Zichen Xie <zichenxie0106@gmail.com> > --- This does not match From. Do not attach (thread) your patchsets to some other threads (unrelated or older versions). This buries them deep in the mailbox and might interfere with applying entire sets. Best regards, Krzysztof
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c index 87d0dd040001..762be3a37228 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c @@ -551,6 +551,8 @@ mt7915_mcu_bss_he_tlv(struct sk_buff *skb, struct ieee80211_vif *vif, struct tlv *tlv; cap = mt76_connac_get_he_phy_cap(phy->mt76, vif); + if (!cap) + return; tlv = mt76_connac_mcu_add_tlv(skb, BSS_INFO_HE_BASIC, sizeof(*he)); @@ -1145,6 +1147,9 @@ mt7915_mcu_sta_bfer_he(struct ieee80211_sta *sta, struct ieee80211_vif *vif, u8 nss_mcs = mt7915_mcu_get_sta_nss(mcs_map); u8 snd_dim, sts; + if (!vc) + return; + bf->tx_mode = MT_PHY_TYPE_HE_SU; mt7915_mcu_sta_sounding_rate(bf); diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c index 748ea6adbc6b..55e4cda2f20f 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c @@ -2508,6 +2508,8 @@ mt7925_mcu_bss_he_tlv(struct sk_buff *skb, struct ieee80211_bss_conf *link_conf, struct tlv *tlv; cap = mt76_connac_get_he_phy_cap(phy->mt76, link_conf->vif); + if (!cap) + return; tlv = mt76_connac_mcu_add_tlv(skb, UNI_BSS_INFO_HE_BASIC, sizeof(*he)); diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c index 6c445a9dbc03..55bb2d0e67e5 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c @@ -798,6 +798,8 @@ mt7996_mcu_bss_he_tlv(struct sk_buff *skb, struct ieee80211_vif *vif, struct tlv *tlv; cap = mt76_connac_get_he_phy_cap(phy->mt76, vif); + if (!cap) + return; tlv = mt7996_mcu_add_uni_tlv(skb, UNI_BSS_INFO_HE_BASIC, sizeof(*he));
mt76_connac_get_he_phy_cap() may return a NULL pointer, leading to NULL Pointer Dereference. Add a NULL check for the returned pointer. Fixes: a5c372f77aa7 ("wifi: mt76: mt7925: extend mt7925_mcu_bss_he_tlv for per-link BSS") Fixes: e6d557a78b60 ("mt76: mt7915: rely on mt76_connac_get_phy utilities") Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices") Signed-off-by: Zichen Xie <zichenxie0106@gmail.com> --- drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 5 +++++ drivers/net/wireless/mediatek/mt76/mt7925/mcu.c | 2 ++ drivers/net/wireless/mediatek/mt76/mt7996/mcu.c | 2 ++ 3 files changed, 9 insertions(+)