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CVE-2014-3611

Published: 23 October 2014

Race condition in the __kvm_migrate_pit_timer function in arch/x86/kvm/i8254.c in the KVM subsystem in the Linux kernel through 3.17.2 allows guest OS users to cause a denial of service (host OS crash) by leveraging incorrect PIT emulation. A local guest user with access to the PIT i/o ports could use this flaw to crash the host.

From the Ubuntu Security Team

Lars Bull reported a race condition in the PIT (programmable interrupt timer) emulation in the KVM (Kernel Virtual Machine) subsystem of the Linux kernel. A local guest user with access to PIT i/o ports could exploit this flaw to cause a denial of service (crash) on the host.

Notes

AuthorNote
jdstrand 
android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.04 preview kernels
linux-lts-saucy no longer receives official support
linux-lts-quantal no longer receives official support
CVE disclosure was part of miscoordinated CRD (various (incomplete)
commits were publicly leaked by other vendors and upstream before the embargo
was lifted).
Updates for linux on Ubuntu 14.04 LTS were made available to users
on 2014/10/28 but due to a process error, USN publication did not happen
until 2014/10/30.
Updates for linux-lts-trusty on Ubuntu 12.04 LTS were made available
to users on 2014/10/29 but due to a process error, USN publication did not
happen until 2014/10/30.
Updates for linux on Ubuntu 14.10 were made available to users on
2014/10/28 but due to a process error, USN publication did not happen until
2014/10/31.

Priority

High

Cvss 3 Severity Score

4.7

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian 		lucid
Released (2.6.32-71.138)
precise
Released (3.2.0-72.107)
trusty
Released (3.13.0-39.66)
upstream
Released (3.18~rc2)
utopic
Released (3.16.0-24.32)
vivid Not vulnerable
(3.16.0-24.32)
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)
Patches:
Introduced by

6aa8b732ca01c3d7a54e93f4d701b8aabbe60fb7

Fixed by 2febc839133280d5a5e8e1179c94ea674489dae2
linux-armadaxp
Launchpad, Ubuntu, Debian 		lucid Does not exist

precise Does not exist
(precise was released [3.2.0-1641.59])
trusty Does not exist

upstream
Released (3.18~rc2)
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 (3.18~rc2)
xenial Not vulnerable
(4.4.0-1001.10)
yakkety Does not exist

zesty Does not exist

linux-ec2
Launchpad, Ubuntu, Debian 		lucid
Released (2.6.32-375.92)
precise Does not exist

trusty Does not exist

upstream
Released (3.18~rc2)
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

trusty Does not exist
(trusty was ignored)
upstream
Released (3.18~rc2)
utopic Ignored
(reached end-of-life)
vivid Ignored
(reached end-of-life)
wily Ignored
(reached end-of-life)
xenial Ignored
(abandoned)
yakkety Ignored
(abandoned)
zesty Does not exist

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

trusty Does not exist

upstream
Released (3.18~rc2)
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 (3.18~rc2)
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

trusty Does not exist
(trusty was ignored)
upstream
Released (3.18~rc2)
utopic Ignored
(reached end-of-life)
vivid Ignored
(reached end-of-life)
wily Ignored
(reached end-of-life)
xenial Ignored
(abandoned)
yakkety Ignored
(abandoned)
zesty Ignored
(abandoned)
linux-grouper
Launchpad, Ubuntu, Debian 		lucid Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (3.18~rc2)
utopic Ignored
(reached 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 (3.18~rc2)
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 (3.18~rc2)
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 Does not exist
(precise was ignored [abandoned])
trusty Does not exist

upstream
Released (3.18~rc2)
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 Does not exist
(precise was ignored [abandoned])
trusty Does not exist

upstream
Released (3.18~rc2)
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 Does not exist
(precise was ignored [abandoned])
trusty Does not exist

upstream
Released (3.18~rc2)
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 Does not exist
(precise was ignored [was pending [3.5.0-57.84~precise1] OEM release])
trusty Does not exist

upstream
Released (3.18~rc2)
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-lts-raring
Launchpad, Ubuntu, Debian 		lucid Does not exist

precise Does not exist
(precise was ignored [was needs-triage now end-of-life])
trusty Does not exist

upstream
Released (3.18~rc2)
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 Does not exist
(precise was ignored [was pending [3.11.0-30.51~precise1] OEM release])
trusty Does not exist

upstream
Released (3.18~rc2)
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-lts-trusty
Launchpad, Ubuntu, Debian 		lucid Does not exist

precise
Released (3.13.0-39.66~precise1)
trusty Does not exist

upstream
Released (3.18~rc2)
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 (3.18~rc2)
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 (3.18~rc2)
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 (3.18~rc2)
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 (3.18~rc2)
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

trusty Does not exist
(trusty was ignored)
upstream
Released (3.18~rc2)
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

trusty Does not exist
(trusty was ignored)
upstream
Released (3.18~rc2)
utopic Ignored
(reached end-of-life)
vivid Ignored
(reached end-of-life)
wily Ignored
(reached end-of-life)
xenial Ignored
(abandoned)
yakkety Ignored
(abandoned)
zesty Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (3.18~rc2)
utopic Ignored
(reached end-of-life)
vivid Ignored
(reached end-of-life)
wily Ignored
(reached end-of-life)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist

upstream
Released (3.18~rc2)
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
(abandoned)
precise Does not exist
(precise was ignored [abandoned])
trusty Does not exist

upstream
Released (3.18~rc2)
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 (3.18~rc2)
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 (3.18~rc2)
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 Does not exist
(precise was released [3.2.0-1456.76])
trusty Does not exist

upstream
Released (3.18~rc2)
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 4.7
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Bugs

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