CVE-2026-80830 usb: core: Add lock to usb_wakeup_notification()
A race condition in the Linux kernel USB core allows local attackers to trigger a use-after-free, potentially causing a system crash.
- 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-2026-80830?
CVE-2026-80830 is a vulnerability in Linux, published on 4 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:
usb: core: Add lock to usb_wakeup_notification()
Add a spin lock to usb_wakeup notification to prevent a race condition with dereferencing freed memory. This could be hit by the xHCI driver as it calls this function from an IRQ and could race with the hub_disconnect() function, which properly grabs this lock to protect the state of the device.
Which versions are affected by CVE-2026-80830?
How do I fix CVE-2026-80830?
Apply the vendor's patch.
Is CVE-2026-80830 being exploited?
There is no known exploitation of CVE-2026-80830 in the wild and no public exploit code.
Sources
Also known as AZL-99405, BELL-CVE-2026-80830, DEBIAN-CVE-2026-80830, GHSA-6h45-3gcw-mpwf, UBUNTU-CVE-2026-80830.