CVE-2024-26919 usb: ulpi: Fix debugfs directory leak
A resource leak in the Linux kernel USB ULPI driver prevents subsequent device probes, causing a denial of service for USB devices.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-26919?
CVE-2024-26919 is a high-severity denial of service vulnerability in Linux kernel, published on 17 Apr 2024. 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: ulpi: Fix debugfs directory leak
The ULPI per-device debugfs root is named after the ulpi device's parent, but ulpi_unregister_interface tries to remove a debugfs directory named after the ulpi device itself. This results in the directory sticking around and preventing subsequent (deferred) probes from succeeding. Change the directory name to match the ulpi device.
Which versions are affected by CVE-2024-26919?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-26919?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-26919 being exploited?
There is no known exploitation of CVE-2024-26919 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-26919, DEBIAN-CVE-2024-26919, GHSA-cx4r-42r4-r5r4, UBUNTU-CVE-2024-26919.