Riskcovery

CVE-2026-90349

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

State
Published
Severity
Not scored
Published
Sep 17, 2026
Updated
Oct 19, 2026
Reserved
Sep 11, 2026

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 1609b014aa29f9a2bf3aaa93f71de4a06725845e to before 637bb99cc766a858d744905e46638459ca128b6cAffected
  • 1609b014aa29f9a2bf3aaa93f71de4a06725845e to before aff81505a84d27f83b4db8e039e813930cb23c2cAffected
  • 1609b014aa29f9a2bf3aaa93f71de4a06725845e to before 4330a0ef9f75a54fde3548432a9a698f06bab635Affected
LinuxLinux
  • 6.18Affected
  • before 6.18Not affected
  • 6.18.52 through 6.18.*Not affected
  • 7.2.6 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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