CVE-2026-90349

In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: mt7996: fix out-of-bounds link array access in mt7996_tx()

When mac80211 leaves the link unspecified, mt7996_tx() substitutes the

primary link id of the station or vif. That value is

IEEE80211_LINK_UNSPECIFIED (0xf) until the first link has been added,

and it is then used unchecked to index vif->link_conf[],

mvif->mt76.link[] and sta->link[], all of which hold

IEEE80211_MLD_MAX_NUM_LINKS (15) entries.

Clamp the primary link id to the default link before using it, and use

the clamped value for the link_sta fallback as well.