---
id: CVE-2022-1462
title: An out-of-bounds read flaw was found in the Linux kernel’s TeleTYpe subsystem
summary: >-
  An out-of-bounds read flaw was found in the Linux kernel’s TeleTYpe subsystem.
  The issue occurs in how a user triggers a race condition using ioctls
  TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage of memory in
  the flush_to…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H'
cwe:
  - CWE-362
  - CWE-362
vendor: linux
product: linux_kernel
affected:
  - linux_kernel
  - enterprise_linux = 8.0
  - enterprise_linux = 9.0
  - debian_linux = 10.0
published: '2022-06-02'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:17:18.993'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-1462'
references:
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2078466'
    label: secalert@redhat.com
  - url: 'https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html'
    label: secalert@redhat.com
  - url: 'https://seclists.org/oss-sec/2022/q2/155'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2078466'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://seclists.org/oss-sec/2022/q2/155'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-794697.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
epss: 0.00338
epssPercentile: 0.25437
ingestedAt: '2026-10-14T13:30:58.413Z'
---

## Overview

An out-of-bounds read flaw was found in the Linux kernel’s TeleTYpe subsystem. The issue occurs in how a user triggers a race condition using ioctls TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage of memory in the flush_to_ldisc function. This flaw allows a local user to crash the system or read unauthorized random data from memory.

## Affected

- `linux_kernel`
- `enterprise_linux = 8.0`
- `enterprise_linux = 9.0`
- `debian_linux = 10.0`

## Remediation

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