From: Felix Fietkau Date: Wed, 27 Aug 2025 08:53:49 +0000 (+0200) Subject: wifi: mt76: mt7996: add missing check for rx wcid entries X-Git-Tag: v6.17-rc5~21^2~49^2~1^2~3 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=4a522b01e368eec58d182ecc47d24f49a39e440d;p=users%2Fgriffoul%2Flinux.git wifi: mt76: mt7996: add missing check for rx wcid entries Non-station wcid entries must not be passed to the rx functions. In case of the global wcid entry, it could even lead to corruption in the wcid array due to pointer being casted to struct mt7996_sta_link using container_of. Fixes: 7464b12b7d92 ("wifi: mt76: mt7996: rework mt7996_rx_get_wcid to support MLO") Link: https://patch.msgid.link/20250827085352.51636-3-nbd@nbd.name Signed-off-by: Felix Fietkau --- diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c index 837deb41ae13..b3fcca9bbb95 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c @@ -62,7 +62,7 @@ static struct mt76_wcid *mt7996_rx_get_wcid(struct mt7996_dev *dev, int i; wcid = mt76_wcid_ptr(dev, idx); - if (!wcid) + if (!wcid || !wcid->sta) return NULL; if (!mt7996_band_valid(dev, band_idx))