CVE-2025-71073

HIGH EPSS 2.5%
Published Jan 13, 20265mo ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Jan 13, 2026 5mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: Input: lkkbd - disable pending work before freeing device lkkbd_interrupt() schedules lk->tq via schedule_work(), and the work handler lkkbd_reinit() dereferences the lkkbd structure and its serio/input_dev fields. lkkbd_disconnect() and error paths in lkkbd_connect() free the lkkbd structure without preventing the reinit work from being queued again until serio_close() returns. This can allow the work handler to run after the structure has been freed, leading to a potential use-after-free. Use disable_work_sync() instead of cancel_work_sync() to ensure the reinit work cannot be re-queued, and call it both in lkkbd_disconnect() and in lkkbd_connect() error paths after serio_open().

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 15

VendorProductVersionRange
linuxlinux_kernel*≥2.6.12.1  –  <6.12.64
linuxlinux_kernel*≥6.13  –  <6.18.3
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/3a7cd1397c209076c371d53bf39a55c138f62342
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cffc4e29b1e2d44ab094cf142d7c461ff09b9104
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e58c88f0cb2d8ed89de78f6f17409d29cfab6c5c
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3a7cd1397c209076c371d53bf39a55c138f62342
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cffc4e29b1e2d44ab094cf142d7c461ff09b9104
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e58c88f0cb2d8ed89de78f6f17409d29cfab6c5c
    Patch