What’s Vulnerable › Vulnerabilities

CVE-2026-80830: usb: core: Add lock to usb_wakeup_notification()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-04 · updated 2026-10-19

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.

Affected products

• Linux kernel: 3.4 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/04ab260407972e631c86f2bc576cd8e64d65b325
• https://git.kernel.org/stable/c/71cfda2fdf78041a01e9d94143baa79feabbdbf6
• https://git.kernel.org/stable/c/7c48aa0c1e79116b8af4b988d16ee29b427d6491
• https://git.kernel.org/stable/c/960ca456faf61824b178f47967340300b24183db
• https://git.kernel.org/stable/c/975ef630393c07fcbebf94f4d97043161b77a6ce
• https://git.kernel.org/stable/c/a7a16167991c88016acef720927400404039d850
• https://git.kernel.org/stable/c/bf2288583b4e072bdff17a233963619e4bc7a8b5
• https://git.kernel.org/stable/c/d80b946804674069db7ce6657319a71cf8eeaa5a
• https://git.kernel.org/stable/c/e263e18a9e7b1ff3e7301f0801c6ff87c31adfb6

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