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CVE-2017-18216

Published: 5 March 2018

In fs/ocfs2/cluster/nodemanager.c in the Linux kernel before 4.15, local users can cause a denial of service (NULL pointer dereference and BUG) because a required mutex is not used.

From the Ubuntu Security Team

It was discovered that a NULL pointer dereference could be triggered in the OCFS2 file system implementation in the Linux kernel. 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
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-10.11)
upstream
Released (4.15~rc1)
artful Ignored
(end of life)
cosmic Not vulnerable
(4.15.0-20.21)
trusty
Released (3.13.0-161.211)
xenial
Released (4.4.0-137.163)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by 853bc26a7ea39e354b9f8889ae7ad1492ffa28d2
linux-flo
Launchpad, Ubuntu, Debian
bionic Does not exist

artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.15~rc1)
xenial Ignored
(abandoned)
linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
upstream
Released (4.15~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1007.7)
trusty
Released (4.4.0-1031.34)
xenial
Released (4.4.0-1069.79)
linux-azure
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
upstream
Released (4.15~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1009.9)
trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
xenial
Released (4.15.0-1013.13~16.04.2)
linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-1003.3~18.04.1)
upstream
Released (4.15~rc1)
cosmic Does not exist

trusty Does not exist

xenial Not vulnerable
(4.15.0-1002.2)
linux-euclid
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.15~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Ignored
(was needed ESM criteria)
linux-gcp
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
upstream
Released (4.15~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1006.6)
trusty Does not exist

xenial
Released (4.15.0-1014.14~16.04.1)
linux-gke
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.15~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Ignored
(end of standard support, was needed)
linux-hwe
Launchpad, Ubuntu, Debian
bionic Not vulnerable

upstream
Released (4.15~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial
Released (4.15.0-24.26~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-8.9~18.04.1)
upstream
Released (4.15~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial
Released (4.15.0-24.26~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
upstream
Released (4.15~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1008.8)
trusty Does not exist

xenial
Released (4.4.0-1035.41)
linux-lts-utopic
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.15~rc1)
artful Does not exist

cosmic Does not exist

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

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

upstream
Released (4.15~rc1)
artful Does not exist

cosmic Does not exist

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

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

upstream
Released (4.15~rc1)
artful Does not exist

cosmic Does not exist

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

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

upstream
Released (4.15~rc1)
artful Does not exist

cosmic Does not exist

trusty
Released (4.4.0-137.163~14.04.1)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.3)
upstream
Released (4.15~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1004.5)
trusty Does not exist

xenial Ignored
(end of standard support, was needed)
linux-raspi2
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1006.7)
artful Ignored
(end of life)
cosmic Not vulnerable
(4.15.0-1010.11)
trusty Does not exist

upstream
Released (4.15~rc1)
xenial
Released (4.4.0-1098.106)
linux-lts-raring
Launchpad, Ubuntu, Debian
cosmic Does not exist

artful Does not exist

bionic Does not exist

trusty Does not exist

upstream
Released (4.15~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.15~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.15~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.15~rc1)
xenial Ignored
(end of life, was needed)
linux-grouper
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.15~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.15~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.15~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.15~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.15~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.15~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.15~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.15~rc1)
xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.15~rc1)
xenial Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.15~rc1)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Not vulnerable

cosmic Does not exist

trusty Does not exist

upstream
Released (4.15~rc1)
xenial
Released (4.4.0-1102.107)
linux-ti-omap4
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.15~rc1)
xenial 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