CVE-2026-90349wifi: mt76: mt7996: fix out-of-bounds link array access in mt7996_tx()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 1609b014aa29f9a2bf3aaa93f71de4a06725845e builds before 637bb99cc766a858d744905e46638459ca128b6c; from 1609b014aa29f9a2bf3aaa93f71de4a06725845e before aff81505a84d27f83b4db8e039e813930cb23c2c; from 1609b014aa29f9a2bf3aaa93f71de4a06725845e before 4330a0ef9f75a54fde3548432a9a698f06bab635 | CNA record |
References
- https://git.kernel.org/stable/c/637bb99cc766a858d744905e46638459ca128b6c
- https://git.kernel.org/stable/c/aff81505a84d27f83b4db8e039e813930cb23c2c
- https://git.kernel.org/stable/c/4330a0ef9f75a54fde3548432a9a698f06bab635
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.