---
id: CVE-2026-98751
title: 'tty: abort break signalling on hangup'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  tty: abort break signalling on hangup

  The break ioctls can race with hangup and end up calling into a tty
  driver for a device that is already gone or powered down.

  Dr…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= f34d7a5b7010b82fe97da95496b9971435530062 <
    3bc82999fb85cecc7eb6ec1755ee7d698aa1e783
  - >-
    Linux >= f34d7a5b7010b82fe97da95496b9971435530062 <
    94af6cd832e9b4ce39a8fb59144a8f09ab56fd35
  - >-
    Linux >= f34d7a5b7010b82fe97da95496b9971435530062 <
    c8ccd3b2013daaf77b98f8a6724fcf4d2c5c52d6
  - >-
    Linux >= f34d7a5b7010b82fe97da95496b9971435530062 <
    845a2737e0f5ffe5ca8d38de556012b0c9472cdd
  - Linux 2.6.26
published: '2026-10-18'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T09:25:03.662Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98751'
references:
  - url: 'https://git.kernel.org/stable/c/3bc82999fb85cecc7eb6ec1755ee7d698aa1e783'
  - url: 'https://git.kernel.org/stable/c/94af6cd832e9b4ce39a8fb59144a8f09ab56fd35'
  - url: 'https://git.kernel.org/stable/c/c8ccd3b2013daaf77b98f8a6724fcf4d2c5c52d6'
  - url: 'https://git.kernel.org/stable/c/845a2737e0f5ffe5ca8d38de556012b0c9472cdd'
tags:
  - cve.org
ingestedAt: '2026-10-18T16:47:32.499Z'
---

## Overview

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

tty: abort break signalling on hangup

The break ioctls can race with hangup and end up calling into a tty
driver for a device that is already gone or powered down.

Drivers must handle this race, but TCSBRK and TCSBRKP should still be
aborted to avoid calling back into the driver after a user-controlled
timeout (possibly even after the tty has been reopened).

Note that drivers should disable any break state on shutdown so just
return on hangup (calling break_ctl() again is racy and will most likely
fail for drivers handling the race).

## Affected

- `Linux >= f34d7a5b7010b82fe97da95496b9971435530062 < 3bc82999fb85cecc7eb6ec1755ee7d698aa1e783`
- `Linux >= f34d7a5b7010b82fe97da95496b9971435530062 < 94af6cd832e9b4ce39a8fb59144a8f09ab56fd35`
- `Linux >= f34d7a5b7010b82fe97da95496b9971435530062 < c8ccd3b2013daaf77b98f8a6724fcf4d2c5c52d6`
- `Linux >= f34d7a5b7010b82fe97da95496b9971435530062 < 845a2737e0f5ffe5ca8d38de556012b0c9472cdd`
- `Linux 2.6.26`

## Remediation

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