---
id: CVE-2026-74675
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  vt: stabilize tty reference in kbd_keycode with tty_port_tty_get

  kbd_keycode() reads vc->port.tty without acquiring a tty reference,
  racing against con_shutdown() whic…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  vt: stabilize tty reference in kbd_keycode with tty_port_tty_get

  kbd_keycode() reads vc->port.tty without acquiring a tty reference,
  racing against con_shutdown() whic…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
published: '2026-08-22'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-74675'
references:
  - url: 'https://git.kernel.org/stable/c/38400673c9bfb39cfc87539e1a072087e98f4e4f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/38a0aa593ebc275aea6f79534d07f44e43768ce6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3f6b1d3fcfc26dc3fc85262f753439df93b055b4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b664592e9ba8c47c9e23408db7ba52eb9f946c8a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b84fd400f80adf4d1c88fbce50ae1cf2f8119e65'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cab5a342f0589334046741006d8a280514f94235'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cc4a1a2ce0c58eafd477effb055863935260ddc1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e25d47a526939ad44b75f778b8a7500562b84fc1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00129
epssPercentile: 0.02244
ingestedAt: '2026-10-14T13:30:58.534Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

vt: stabilize tty reference in kbd_keycode with tty_port_tty_get

kbd_keycode() reads vc->port.tty without acquiring a tty reference,
racing against con_shutdown() which clears port.tty under a different
lock. Use tty_port_tty_get()/tty_kref_put() to hold a proper reference
for the duration the tty pointer is needed.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.