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CVE-2018-10940

Published: 9 May 2018

The cdrom_ioctl_media_changed function in drivers/cdrom/cdrom.c in the Linux kernel before 4.16.6 allows local attackers to use a incorrect bounds check in the CDROM driver CDROM_MEDIA_CHANGED ioctl to read out kernel memory.

From the Ubuntu Security Team

It was discovered that the cdrom driver in the Linux kernel contained an incorrect bounds check. A local attacker could use this to expose sensitive information (kernel memory).

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
artful Ignored
(reached end-of-life)
bionic
Released (4.15.0-24.26)
cosmic Not vulnerable
(4.15.0-29.31)
precise Ignored
(was needed ESM criteria)
trusty
Released (3.13.0-157.207)
upstream
Released (4.17~rc3)
xenial
Released (4.4.0-128.154)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by 9de4ee40547fd315d4a0ed1dd15a2fa3559ad707
linux-aws
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1011.11)
cosmic Not vulnerable
(4.15.0-1011.11)
precise Does not exist

trusty
Released (4.4.0-1023.23)
upstream
Released (4.17~rc3)
xenial
Released (4.4.0-1061.70)
linux-azure
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1014.14)
cosmic Not vulnerable
(4.15.0-1014.14)
precise Does not exist

trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
upstream
Released (4.17~rc3)
xenial
Released (4.15.0-1014.14~16.04.1)
linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-1003.3~18.04.1)
cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial
Released (4.15.0-1014.14)
linux-euclid
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial Ignored
(was needed ESM criteria)
linux-flo
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.17~rc3)
xenial Ignored
(abandoned)
linux-gcp
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1010.10)
cosmic Not vulnerable
(4.15.0-1010.10)
precise Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial
Released (4.15.0-1014.14~16.04.1)
linux-gke
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial Ignored
(was needs-triage now end-of-life)
linux-goldfish
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.17~rc3)
xenial Ignored
(was needs-triage now end-of-life)
linux-grouper
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.17~rc3)
xenial Does not exist

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

bionic Not vulnerable

cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial
Released (4.15.0-24.26~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.18.0-8.9~18.04.1)
cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial
Released (4.15.0-24.26~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1012.12)
cosmic Not vulnerable
(4.15.0-1012.12)
precise Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial
Released (4.4.0-1027.32)
linux-lts-trusty
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

precise Ignored
(was needed ESM criteria)
trusty Does not exist

upstream
Released (4.17~rc3)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [out of standard support])
upstream
Released (4.17~rc3)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [out of standard support])
upstream
Released (4.17~rc3)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [out of standard support])
upstream
Released (4.17~rc3)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty
Released (4.4.0-128.154~14.04.1)
upstream
Released (4.17~rc3)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.17~rc3)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.17~rc3)
xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.17~rc3)
xenial Does not exist

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

bionic
Released (4.15.0-1009.12)
cosmic Not vulnerable
(4.15.0-1009.12)
precise Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial Ignored
(was needed now end-of-life)
linux-raspi2
Launchpad, Ubuntu, Debian
artful Ignored
(reached end-of-life)
bionic
Released (4.15.0-1013.14)
cosmic Not vulnerable
(4.15.0-1021.23)
precise Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial
Released (4.4.0-1091.99)
linux-snapdragon
Launchpad, Ubuntu, Debian
artful
Released (4.4.0-1094.99)
bionic Not vulnerable

cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial
Released (4.4.0-1094.99)

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