Vulnerability 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.
References
- https://git.kernel.org/stable/c/2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad
- https://git.kernel.org/stable/c/7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7
- https://git.kernel.org/stable/c/8826d7a5e2dd727aa96456ccd58b33d2b080e935
FAQ
What is CVE-2026-90356?
CVE-2026-90356 is a documented vulnerability. 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 li...
How severe is CVE-2026-90356?
CVSS scoring is not yet available for CVE-2026-90356. Check NVD for updates.
Is there a patch for CVE-2026-90356?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.