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CVE-2017-18221

Published: 7 March 2018

The __munlock_pagevec function in mm/mlock.c in the Linux kernel before 4.11.4 allows local users to cause a denial of service (NR_MLOCK accounting corruption) via crafted use of mlockall and munlockall system calls.

From the Ubuntu Security Team

Kefeng Wang discovered that a race condition existed in the memory locking implementation in the Linux kernel. A local attacker could use this to cause a denial of service.

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.13.0-16.19)
upstream
Released (4.12~rc4)
artful Not vulnerable
(4.11.0-10.15)
trusty Pending
(3.13.0-149.199)
xenial
Released (4.4.0-87.110)
Patches:
Introduced by

1ebb7cc6a58321a4b22c4c9097b4651b0ab859d0

Fixed by 70feee0e1ef331b22cc51f383d532a0d043fbdcc
linux-armadaxp
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.12~rc4)
artful Does not exist

trusty Does not exist

xenial Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
upstream
Released (4.12~rc4)
artful Does not exist

trusty Not vulnerable
(4.4.0-1002.2)
xenial
Released (4.4.0-1026.35)
linux-azure
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
upstream
Released (4.12~rc4)
artful Does not exist

trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
xenial Not vulnerable
(4.11.0-1009.9)
linux-flo
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.12~rc4)
artful Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(abandoned)
linux-gcp
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
upstream
Released (4.12~rc4)
artful Does not exist

trusty Does not exist

xenial
Released (4.13.0-1002.5)
linux-gke
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.12~rc4)
artful Does not exist

trusty Does not exist

xenial
Released (4.4.0-1022.22)
linux-goldfish
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.12~rc4)
artful Does not exist

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

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

upstream
Released (4.12~rc4)
artful Does not exist

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

linux-hwe
Launchpad, Ubuntu, Debian
bionic Not vulnerable

upstream
Released (4.12~rc4)
artful Does not exist

trusty Does not exist

xenial
Released (4.13.0-26.29~16.04.2)
linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic
Released (4.18.0-8.9~18.04.1)
upstream
Released (4.12~rc4)
artful Does not exist

trusty Does not exist

xenial
Released (4.13.0-26.29~16.04.2)
linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
upstream
Released (4.12~rc4)
artful Does not exist

trusty Does not exist

xenial Not vulnerable
(4.4.0-1004.9)
linux-euclid
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.12~rc4)
artful Does not exist

trusty Does not exist

xenial Ignored
(was needed ESM criteria)
linux-oem
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.3)
upstream
Released (4.12~rc4)
artful Does not exist

trusty Does not exist

xenial Not vulnerable
(4.13.0-1008.9)
linux-linaro-omap
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

trusty Does not exist

upstream
Released (4.12~rc4)
xenial Does not exist

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

bionic Does not exist

trusty Does not exist

upstream
Released (4.12~rc4)
xenial Does not exist

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

bionic Does not exist

trusty Does not exist

upstream
Released (4.12~rc4)
xenial Does not exist

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

bionic Does not exist

trusty Does not exist

upstream
Released (4.12~rc4)
xenial Does not exist

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

bionic Does not exist

trusty Does not exist

upstream
Released (4.12~rc4)
xenial Does not exist

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

bionic Does not exist

trusty Does not exist

upstream
Released (4.12~rc4)
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

trusty Does not exist

upstream
Released (4.12~rc4)
xenial Does not exist

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

bionic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.12~rc4)
xenial Does not exist

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

bionic Does not exist

trusty Ignored
(end of life, was needs-triage)
upstream
Released (4.12~rc4)
xenial Does not exist

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

bionic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.12~rc4)
xenial Does not exist

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

bionic Does not exist

trusty
Released (4.4.0-87.110~14.04.1)
upstream
Released (4.12~rc4)
xenial Does not exist

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

bionic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.12~rc4)
xenial Does not exist

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

bionic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.12~rc4)
xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.12~rc4)
xenial Does not exist

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

bionic Does not exist

trusty Does not exist

upstream
Released (4.12~rc4)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
artful Not vulnerable
(4.13.0-1004.4)
bionic Not vulnerable
(4.13.0-1005.5)
trusty Does not exist

upstream
Released (4.12~rc4)
xenial
Released (4.4.0-1065.73)
linux-snapdragon
Launchpad, Ubuntu, Debian
artful Not vulnerable
(4.4.0-1067.72)
bionic Not vulnerable

trusty Does not exist

upstream
Released (4.12~rc4)
xenial
Released (4.4.0-1067.72)
linux-ti-omap4
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

trusty Does not exist

upstream
Released (4.12~rc4)
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