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CVE-2017-5754

Published: 3 January 2018

Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache.

From the Ubuntu Security Team

Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory.

Notes

AuthorNote
tyhicks
Variant 3, aka Meltdown
This flaw only affects Intel processors. AMD reports that their
processors are not affected.
The break-fix lines for this CVE are not complete since a large
number of patches are required to mitigate this issue. The commit(s) listed
are chosen as placeholders for automated CVE triage purposes.
ppc64el and s390x kernels were fixed with the following commits:
aa8a5e0062ac940f7659394f4817c948dc8c0667
local-2017-5754-ppc64el
d768bd892fc8f066cd3aa000eb1867bcf32db0ee
local-2017-5754-s390x Unfortunately, the automated CVE triage tooling gets confused since the commits identified by the local-* placeholders were reverted in favor of the upstream commits so they're not included in the break-fix section below.

Priority

Critical

Cvss 3 Severity Score

5.6

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.13.0-25.29)
upstream
Released (4.15~rc6)
artful
Released (4.13.0-25.29)
cosmic Not vulnerable
(4.15.0-20.21)
trusty
Released (3.13.0-139.188)
xenial
Released (4.4.0-108.131)
zesty Ignored
(end of life, was pending)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by fc2fbc8512ed08d1de7720936fd7d2e4ce02c3a2|local-2017-5754-intel
linux-linaro-omap
Launchpad, Ubuntu, Debian
upstream
Released (4.15~rc6)
bionic Does not exist

artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

linux-ti-omap4
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.15~rc6)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

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

upstream
Released (4.15~rc6)
cosmic Does not exist

artful Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

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

upstream
Released (4.15~rc6)
artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(end of life, was needs-triage)
zesty Ignored
(end of life)
linux-grouper
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.15~rc6)
artful Does not exist

cosmic Does not exist

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

zesty Does not exist

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

upstream
Released (4.15~rc6)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
upstream
Released (4.15~rc6)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1007.7)
trusty
Released (4.4.0-1009.9)
xenial
Released (4.4.0-1047.56)
zesty Does not exist

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

upstream
Released (4.15~rc6)
artful Does not exist

cosmic Does not exist

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

linux-hwe
Launchpad, Ubuntu, Debian
bionic Not vulnerable

upstream
Released (4.15~rc6)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial
Released (4.13.0-26.29~16.04.2)
zesty Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-11.12~18.04.1)
upstream
Released (4.15~rc6)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial
Released (4.13.0-26.29~16.04.2)
zesty Does not exist

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

upstream
Released (4.15~rc6)
artful Does not exist

cosmic Does not exist

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

zesty Does not exist

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

upstream
Released (4.15~rc6)
artful Does not exist

cosmic Does not exist

trusty Ignored
(end of life, was pending)
xenial Does not exist

zesty Does not exist

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

upstream
Released (4.15~rc6)
artful Does not exist

cosmic Does not exist

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

zesty Does not exist

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

upstream
Released (4.15~rc6)
artful Does not exist

cosmic Does not exist

trusty
Released (4.4.0-108.131~14.04.1)
xenial Does not exist

zesty Does not exist

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

upstream
Released (4.15~rc6)
artful Does not exist

cosmic Does not exist

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

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

upstream
Released (4.15~rc6)
artful Does not exist

cosmic Does not exist

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

zesty Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1006.7)
upstream
Released (4.15~rc6)
artful
Released (4.13.0-1015.16)
cosmic Not vulnerable
(4.15.0-1010.11)
trusty Does not exist

xenial
Released (4.4.0-1082.90)
zesty Ignored
(end of life)
linux-snapdragon
Launchpad, Ubuntu, Debian
bionic Not vulnerable

upstream
Released (4.15~rc6)
artful Ignored
(end of life)
cosmic Does not exist

trusty Does not exist

xenial
Released (4.4.0-1084.89)
zesty Ignored
(end of life)
firefox
Launchpad, Ubuntu, Debian
bionic
Released (59.0.1+build1-0ubuntu1)
upstream
Released (57.0.4)
artful
Released (57.0.4+build1-0ubuntu0.17.10.1)
cosmic
Released (59.0.1+build1-0ubuntu1)
xenial
Released (57.0.4+build1-0ubuntu0.16.04.1)
zesty
Released (57.0.4+build1-0ubuntu0.17.04.1)
trusty
Released (57.0.4+build1-0ubuntu0.14.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
upstream
Released (4.15~rc6)
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 (4.13.0-1005.7)
zesty Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-1004.4~18.04.1)
upstream
Released (4.15~rc6)
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~rc6)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial
Released (4.4.0-9021.22)
zesty Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
upstream
Released (4.15~rc6)
artful Does not exist

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

xenial
Released (4.13.0-1006.9)
zesty Does not exist

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

upstream
Released (4.15~rc6)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Ignored
(end of standard support, was pending)
zesty Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
upstream
Released (4.15~rc6)
artful Does not exist

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

xenial
Released (4.4.0-1015.20)
zesty Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.3)
upstream
Released (4.15~rc6)
artful Does not exist

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

xenial
Released (4.13.0-1015.16)
zesty 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~rc6)
xenial Does not exist

zesty 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~rc6)
xenial Does not exist

zesty 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

cosmic Does not exist

trusty Does not exist

upstream
Released (4.15~rc6)
xenial Does not exist

zesty Does not exist

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~rc6)
xenial Does not exist

zesty 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~rc6)
xenial Does not exist

zesty 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~rc6)
xenial Does not exist

zesty 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~rc6)
xenial Does not exist

zesty Does not exist

Severity score breakdown

Parameter Value
Base score 5.6
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Changed
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N