CVE-2025-39808 HID: hid-ntrig: fix unable to handle page fault in ntrig_report_version()
A null pointer dereference in the Linux kernel's N-Trig HID driver allows local attackers to cause a system crash via crafted UHID descriptors.
- 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-2025-39808?
CVE-2025-39808 is a medium-severity vulnerability in Debian Debian Linux, published on 16 Sep 2025. 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:
HID: hid-ntrig: fix unable to handle page fault in ntrig_report_version()
in ntrig_report_version(), hdev parameter passed from hid_probe(). sending descriptor to /dev/uhid can make hdev->dev.parent->parent to null if hdev->dev.parent->parent is null, usb_dev has invalid address(0xffffffffffffff58) that hid_to_usb_dev(hdev) returned when usb_rcvctrlpipe() use usb_dev,it trigger page fault error for address(0xffffffffffffff58)
add null check logic to ntrig_report_version() before calling hid_to_usb_dev()
Which versions are affected by CVE-2025-39808?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2025-39808?
Apply the vendor's patch.
Is CVE-2025-39808 being exploited?
There is no known exploitation of CVE-2025-39808 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-67410, AZL-74703, BELL-CVE-2025-39808, DEBIAN-CVE-2025-39808, GHSA-7j3c-c3g5-v328, ROOT-OS-DEBIAN-11-CVE-2025-39808 and 5 more.