kernel: HID: uclogic: fix use-after-free of inrange_timer on remove (CVE-2026-80766)

Overview

A flaw was found in the Linux kernel's Human Interface Device (HID) uclogic driver. During the removal of a uclogic device, a timing issue allows the inrange_timer to be re-armed after it has been cancelled. This can lead to the timer attempting to access memory that has already been freed, resulting in a use-after-free vulnerability in the kernel's timer-softirq context. This flaw could potentially lead to system instability or a denial of service.

Vendor advisories

• Red Hat VEX · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-25 · vex

kernel: HID: uclogic: fix use-after-free of inrange_timer on remove — rated Moderate by Red Hat. Released 2026-09-04, updated 2026-10-25.

Affected:

• Red Hat Enterprise Linux 10
• Red Hat Enterprise Linux 8
• Red Hat Enterprise Linux 9
• Red Hat OpenShift Container Platform 4

No fix planned:

• Red Hat Enterprise Linux 10
• Red Hat Enterprise Linux 8
• Red Hat Enterprise Linux 9
• Red Hat OpenShift Container Platform 4

Not affected:

• Red Hat Enterprise Linux 6
• Red Hat Enterprise Linux 7

Remediation

Fix deferred

Workarounds / mitigations:

• Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.