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CVE-2017-14340

Published: 15 September 2017

The XFS_IS_REALTIME_INODE macro in fs/xfs/xfs_linux.h in the Linux kernel before 4.13.2 does not verify that a filesystem has a realtime device, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via vectors related to setting an RHINHERIT flag on a directory.

From the Ubuntu Security Team

Dave Chinner discovered that the XFS filesystem did not enforce that the realtime inode flag was settable only on filesystems on a realtime device. A local attacker could use this to cause a denial of service (system crash).

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
linux-armadaxp
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

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

trusty Not vulnerable
(4.4.0-1002.2)
xenial
Released (4.4.0-1039.48)
zesty Does not exist

upstream
Released (4.14~rc1)
bionic Not vulnerable
(4.15.0-1001.1)
linux-azure
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
xenial
Released (4.13.0-1005.7)
zesty Does not exist

upstream
Released (4.14~rc1)
bionic Not vulnerable
(4.15.0-1002.2)
linux-euclid
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

xenial Ignored
(was needed ESM criteria)
zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

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

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(abandoned)
zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

xenial
Released (4.10.0-1008.8)
zesty Does not exist

upstream
Released (4.14~rc1)
bionic Not vulnerable
(4.15.0-1001.1)
linux-gke
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

xenial
Released (4.4.0-1033.33)
zesty Does not exist

bionic Does not exist

upstream
Released (4.14~rc1)
linux-goldfish
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(end of life, was needed)
zesty Ignored
(end of life)
upstream
Released (4.14~rc1)
bionic Does not exist

linux-grouper
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

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

trusty Does not exist

xenial
Released (4.10.0-38.42~16.04.1)
zesty Does not exist

upstream
Released (4.14~rc1)
bionic Not vulnerable

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

trusty Does not exist

xenial
Released (4.10.0-38.42~16.04.1)
zesty Does not exist

upstream
Released (4.14~rc1)
bionic
Released (4.18.0-8.9~18.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

xenial
Released (4.4.0-1009.14)
zesty Does not exist

upstream
Released (4.14~rc1)
bionic Not vulnerable
(4.15.0-1002.2)
linux-linaro-omap
Launchpad, Ubuntu, Debian
artful Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

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

trusty Does not exist

xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

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

trusty Does not exist

xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

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

trusty Does not exist

xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

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

trusty Does not exist

xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

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

trusty Does not exist
(trusty was ignored [end of standard support])
xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

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

trusty Ignored
(end of life, was needs-triage)
xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

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

trusty Does not exist
(trusty was ignored [end of standard support])
xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

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

trusty
Released (4.4.0-98.121~14.04.1)
xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

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

trusty Does not exist
(trusty was ignored [abandoned])
xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

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

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(abandoned)
zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

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

trusty Does not exist
(trusty was ignored [abandoned])
xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

linux-oem
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

xenial Not vulnerable
(4.13.0-1008.9)
zesty Does not exist

upstream
Released (4.14~rc1)
bionic Not vulnerable
(4.15.0-1002.3)
linux-qcm-msm
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

upstream
Released (4.14~rc1)
bionic Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
artful Not vulnerable
(4.13.0-1004.4)
trusty Does not exist

xenial
Released (4.4.0-1076.84)
zesty
Released (4.10.0-1020.23)
upstream
Released (4.14~rc1)
bionic Not vulnerable
(4.13.0-1005.5)
linux-snapdragon
Launchpad, Ubuntu, Debian
artful
Released (4.4.0-1078.83)
trusty Does not exist

xenial
Released (4.4.0-1078.83)
zesty
Released (4.4.0-1078.83)
upstream
Released (4.14~rc1)
bionic Not vulnerable

linux
Launchpad, Ubuntu, Debian
upstream
Released (4.14~rc1)
bionic Not vulnerable
(4.13.0-16.19)
trusty
Released (3.13.0-135.184)
xenial
Released (4.4.0-98.121)
zesty
Released (4.10.0-38.42)
artful Not vulnerable
(4.13.0-12.13)
Patches:
Introduced by

f538d4da8d521746ca5ebf8c1a8105eb49bfb45e

Fixed by b31ff3cdf540110da4572e3e29bd172087af65cc
linux-ti-omap4
Launchpad, Ubuntu, Debian
upstream
Released (4.14~rc1)
bionic Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

artful 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:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H