CVE-2026-90368 wifi: mt76: mt7915: unwind state on add_interface failure
A use-after-free vulnerability in the mt7915 Wi-Fi driver allows attackers to cause denial of service or execute code via improper state unwinding on interface failure.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-90368?
CVE-2026-90368 is an use after free vulnerability in Linux, published on 17 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7915: unwind state on add_interface failure
When mt76_wcid_alloc() fails, mt7915_add_interface() returned without clearing the vif_mask/omac_mask bits it had already set, without removing the firmware dev info added earlier, and without clearing a monitor_vif pointer to the vif mac80211 is about to free. mac80211 does not call remove_interface() for a failed add, so the indices and firmware dev entry leaked permanently and testmode could dereference the stale monitor_vif. Add a proper error unwind.
Which versions are affected by CVE-2026-90368?
How do I fix CVE-2026-90368?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-90368 being exploited?
There is no known exploitation of CVE-2026-90368 in the wild and no public exploit code.
Sources
Also known as AZL-102170, BELL-CVE-2026-90368, DEBIAN-CVE-2026-90368, GHSA-f4w3-pjj6-cfwj, UBUNTU-CVE-2026-90368.