Riskcovery

CVE-2026-90356

wifi: mt76: mt7996: free vif links after clearing wcid entries on full reset

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: 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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • ace5d3b6b49e8391beb4d7244348ba7da5298878 to before 2b10eb3636d0c4cb6b763e045ec1294dbd70f5adAffected
  • ace5d3b6b49e8391beb4d7244348ba7da5298878 to before 8826d7a5e2dd727aa96456ccd58b33d2b080e935Affected
  • ace5d3b6b49e8391beb4d7244348ba7da5298878 to before 7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7Affected
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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