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CVE-2014-0203

Published: 23 June 2014

The __do_follow_link function in fs/namei.c in the Linux kernel before 2.6.33 does not properly handle the last pathname component during use of certain filesystems, which allows local users to cause a denial of service (incorrect free operations and system crash) via an open system call.

From the Ubuntu Security Team

A bug was discovered in the handling of pathname components when used with an autofs direct mount. A local user could exploit this flaw to cause a denial of service (system crash) via an open system call.

Notes

AuthorNote
jdstrand
android kernels (goldfish, grouper, maguro, mako and manta) are not
supported on the Ubuntu Touch 13.10 preview kernels
android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.04 preview kernels

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
lucid
Released (2.6.32-65.131)
precise Not vulnerable
(3.1.0-1.1)
saucy Not vulnerable
(3.9.0-0.2)
trusty Not vulnerable
(3.11.0-12.19)
utopic Not vulnerable
(3.13.0-24.46)
vivid Not vulnerable
(3.16.0-23.31)
wily Not vulnerable
(3.19.0-15.15)
xenial Not vulnerable
(4.2.0-16.19)
yakkety Not vulnerable
(4.4.0-21.37)
zesty Not vulnerable
(4.8.0-22.24)
upstream
Released (2.6.33~rc5)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by 86acdca1b63e6890540fa19495cfc708beff3d8b
linux-armadaxp
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Not vulnerable
(3.2.0-1600.1)
saucy Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Not vulnerable
(4.4.0-1002.2)
upstream
Released (2.6.33~rc5)
xenial Not vulnerable
(4.4.0-1001.10)
yakkety Does not exist

zesty Does not exist

linux-ec2
Launchpad, Ubuntu, Debian
lucid
Released (2.6.32-369.85)
precise Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-flo
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

saucy Does not exist

trusty Does not exist
(trusty was not-affected [3.4.0-1.3])
upstream
Released (2.6.33~rc5)
utopic Not vulnerable
(3.4.0-3.10)
vivid Not vulnerable
(3.4.0-3.15)
wily Not vulnerable
(3.4.0-4.18)
xenial Not vulnerable
(3.4.0-5.22)
yakkety Not vulnerable
(3.4.0-3.15)
zesty Does not exist

linux-fsl-imx51
Launchpad, Ubuntu, Debian
lucid Ignored
(end of life)
precise Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-gke
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
xenial Not vulnerable
(4.4.0-1003.3)
yakkety Does not exist

zesty Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

saucy Ignored

trusty Does not exist
(trusty was not-affected [3.4.0-1.9])
upstream
Released (2.6.33~rc5)
utopic Not vulnerable
(3.4.0-3.14)
vivid Not vulnerable
(3.4.0-4.23)
wily Not vulnerable
(3.4.0-4.24)
xenial Not vulnerable
(3.4.0-4.27)
yakkety Not vulnerable
(3.4.0-4.27)
zesty Not vulnerable
(3.4.0-4.27)
linux-grouper
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

saucy Ignored

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (2.6.33~rc5)
utopic Ignored
(end of life)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
yakkety Does not exist

zesty Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
yakkety Does not exist

zesty Does not exist

linux-linaro-omap
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Ignored
(end of life)
saucy Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-linaro-shared
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Ignored
(end of life)
saucy Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-linaro-vexpress
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Ignored
(end of life)
saucy Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-quantal
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Not vulnerable
(3.5.0-18.29~precise1)
saucy Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-raring
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Not vulnerable
(3.8.0-19.30~precise1)
saucy Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-saucy
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Not vulnerable
(3.11.0-13.20~precise2)
saucy Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-trusty
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Not vulnerable
(3.13.0-24.46~precise1)
saucy Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

trusty Does not exist
(trusty was not-affected [3.16.0-25.33~14.04.2])
upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-vivid
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

trusty Does not exist
(trusty was not-affected [3.19.0-18.18~14.04.1])
upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was not-affected [4.2.0-18.22~14.04.1])
upstream
Released (2.6.33~rc5)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Not vulnerable
(4.4.0-13.29~14.04.1)
upstream
Released (2.6.33~rc5)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-maguro
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

saucy Ignored

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-mako
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

saucy Ignored

trusty Does not exist
(trusty was not-affected [3.4.0-3.21])
upstream
Released (2.6.33~rc5)
utopic Not vulnerable
(3.4.0-5.28)
vivid Not vulnerable
(3.4.0-5.34)
wily Not vulnerable
(3.4.0-6.37)
xenial Not vulnerable
(3.4.0-7.40)
yakkety Not vulnerable
(3.4.0-5.34)
zesty Does not exist

linux-manta
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

saucy Ignored

trusty Does not exist
(trusty was not-affected [3.4.0-4.19])
upstream
Released (2.6.33~rc5)
utopic Not vulnerable
(3.4.0-6.25)
vivid Not vulnerable
(3.4.0-6.29)
wily Not vulnerable
(3.4.0-7.32)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-mvl-dove
Launchpad, Ubuntu, Debian
lucid Ignored
(end of life)
precise Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
lucid Ignored
(end of life)
precise Ignored
(end of life)
saucy Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
vivid Does not exist

wily Not vulnerable
(4.2.0-1008.12)
xenial Not vulnerable
(4.2.0-1013.19)
yakkety Not vulnerable
(4.4.0-1009.10)
zesty Not vulnerable
(4.8.0-1013.15)
linux-snapdragon
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (2.6.33~rc5)
wily Does not exist

xenial Not vulnerable
(4.4.0-1012.12)
yakkety Not vulnerable
(4.4.0-1012.12)
zesty Not vulnerable
(4.4.0-1029.32)
linux-ti-omap4
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Not vulnerable
(3.0.0-1401.2)
saucy Not vulnerable
(3.5.0-223.34)
trusty Does not exist

upstream
Released (2.6.33~rc5)
utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H