CVE-2016-2781

Publication date 7 February 2017

Last updated 31 March 2026

Ubuntu priority

Cvss 3 Severity Score

Description

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
coreutils	25.10 questing	Ignored
	25.04 plucky	Ignored end of life, was deferred
	24.10 oracular	Ignored end of life, was deferred
	24.04 LTS noble	Ignored
	23.10 mantic	Ignored end of life, was deferred [2022-02-01]
	23.04 lunar	Ignored end of life, was deferred [2022-02-01]
	22.10 kinetic	Ignored end of life, was deferred [2022-02-01]
	22.04 LTS jammy	Ignored
	21.10 impish	Ignored end of life
	21.04 hirsute	Ignored end of life
	20.10 groovy	Ignored end of life
	20.04 LTS focal	Ignored end of standard support, was deferred
	19.10 eoan	Ignored end of life
	19.04 disco	Ignored end of life
	18.10 cosmic	Ignored end of life
	18.04 LTS bionic	Ignored end of standard support, was deferred
	17.10 artful	Ignored end of life
	17.04 zesty	Ignored end of life
	16.10 yakkety	Ignored end of life
	16.04 LTS xenial	Ignored end of standard support, was deferred
	15.10 wily	Ignored end of life
	14.04 LTS trusty	Ignored end of standard support
	12.04 LTS precise	Ignored end of life

Notes

mdeslaur

as of 2026-03-31, there is no viable solution for this issue. We will not be fixing this CVE in Ubuntu, marking as ignored.

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality	None
Integrity impact	High
Availability impact	None
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N