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CVE-2018-14656

Published: 8 October 2018

A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address into the dmesg log.

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic Not vulnerable

cosmic Not vulnerable
(4.18.0-8.9)
trusty Not vulnerable

upstream
Released (4.19~rc2)
xenial Not vulnerable

Patches:
Introduced by

7cccf0725cf7402514e09c52b089430005798b7f

Fixed by 342db04ae71273322f0011384a9ed414df8bdae4
linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable

cosmic Not vulnerable
(4.18.0-1002.3)
trusty Not vulnerable

upstream
Released (4.19~rc2)
xenial Not vulnerable

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

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.19~rc2)
xenial Ignored
(abandoned)
linux-azure
Launchpad, Ubuntu, Debian
bionic Not vulnerable

cosmic Not vulnerable
(4.18.0-1003.3)
trusty Not vulnerable

upstream
Released (4.19~rc2)
xenial Not vulnerable

linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-1003.3~18.04.1)
cosmic Does not exist

trusty Does not exist

upstream
Released (4.19~rc2)
xenial Not vulnerable

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

cosmic Does not exist

trusty Does not exist

upstream
Released (4.19~rc2)
xenial Not vulnerable

linux-gcp
Launchpad, Ubuntu, Debian
bionic Not vulnerable

cosmic Not vulnerable
(4.18.0-1002.3)
trusty Does not exist

upstream
Released (4.19~rc2)
xenial Not vulnerable

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

cosmic Does not exist

trusty Does not exist

upstream
Released (4.19~rc2)
xenial Ignored
(end of standard support)
linux-goldfish
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.19~rc2)
xenial Ignored
(end of life)
linux-grouper
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.19~rc2)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic Not vulnerable

cosmic Does not exist

trusty Does not exist

upstream
Released (4.19~rc2)
xenial Not vulnerable

linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-8.9~18.04.1)
cosmic Does not exist

trusty Does not exist

upstream
Released (4.19~rc2)
xenial Not vulnerable

linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable

cosmic Not vulnerable
(4.18.0-1002.2)
trusty Does not exist

upstream
Released (4.19~rc2)
xenial Not vulnerable

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

cosmic Does not exist

trusty Does not exist

upstream
Released (4.19~rc2)
xenial Does not exist

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

cosmic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.19~rc2)
xenial Does not exist

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

cosmic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.19~rc2)
xenial Does not exist

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

cosmic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.19~rc2)
xenial Does not exist

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

cosmic Does not exist

trusty Not vulnerable

upstream
Released (4.19~rc2)
xenial Does not exist

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

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.19~rc2)
xenial Does not exist

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

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.19~rc2)
xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.19~rc2)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic Not vulnerable

cosmic Not vulnerable

trusty Does not exist

upstream
Released (4.19~rc2)
xenial Not vulnerable

linux-raspi2
Launchpad, Ubuntu, Debian
bionic Not vulnerable

cosmic Not vulnerable
(4.18.0-1004.6)
trusty Does not exist

upstream
Released (4.19~rc2)
xenial Not vulnerable

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic Not vulnerable

cosmic Does not exist

trusty Does not exist

upstream
Released (4.19~rc2)
xenial Not vulnerable

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N