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CVE-2026-90356wifi: mt76: mt7996: free vif links after clearing wcid entries on full reset

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: free vif links after clearing wcid entries on full reset mt7996_mac_reset_vif_iter() queues non-default vif links for kfree_rcu while dev->wcid[] still holds pointers to the wcid embedded in each freed link; mt76_reset_device() then dereferences those entries and runs mt76_wcid_cleanup() on them. If a grace period elapses in between, the cleanup operates on freed memory. Run mt76_reset_device() first, so the wcid entries are cleaned up and cleared while the links are still valid.

Timeline

  1. ID reserved

    By Linux

  2. · 6 days later

    Published

  3. · 32 days later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.

EPSS (exploitation in 30 days)
0.21% · top 89% of all CVEs (15 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.

Affected products

  • Linux · Linux

    • affected ace5d3b6b49e8391beb4d7244348ba7da5298878 – < 2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad
    • affected ace5d3b6b49e8391beb4d7244348ba7da5298878 – < 8826d7a5e2dd727aa96456ccd58b33d2b080e935
    • affected ace5d3b6b49e8391beb4d7244348ba7da5298878 – < 7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7

  • Linux · Linux

    • affected 6.18
    • unaffected < 6.18
    • unaffected 6.18.52 – ≤ 6.18.*
    • unaffected 7.2.6 – ≤ 7.2.*
    • unaffected 7.3 – ≤ *

References

References3

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .