CVE-2025-39808: HID: hid-ntrig: fix unable to handle page fault in ntrig_report_version()

Severity: medium (CVSS 5.5 v3.1)
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: 2025-09-16 · updated 2026-10-19

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()

Affected products

Debian Linux: 11.0
Linux kernel: from 2.6.37 before 5.4.298; from 5.5 before 5.10.242; from 5.11 before 5.15.191; from 5.16 before 6.1.150; from 6.2 before 6.6.104; from 6.7 before 6.12.45 — fixed in 5.10.242, 5.15.191, 5.4.298, 6.1.150, 6.12.45, 6.16.5

How to fix

Upgrade to a fixed version: Linux kernel 5.10.242, 5.15.191, 5.4.298, 6.1.150. Check the vendor advisory for mitigations.

References

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