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CVE-2018-6412

Published: 31 January 2018

In the function sbusfb_ioctl_helper() in drivers/video/fbdev/sbuslib.c in the Linux kernel through 4.15, an integer signedness error allows arbitrary information leakage for the FBIOPUTCMAP_SPARC and FBIOGETCMAP_SPARC commands.

Notes

AuthorNote
sbeattie
sparc configurations only, which Ubuntu no longer enables

Priority

Negligible

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
artful Not vulnerable
(sparc config only)
bionic Not vulnerable
(sparc config only)
cosmic Not vulnerable
(4.17.0-6.7)
trusty Not vulnerable
(sparc config only)
upstream
Released (4.16~rc5)
xenial Not vulnerable
(sparc config only)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by 250c6c49e3b68756b14983c076183568636e2bde
linux-aws
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(sparc config only)
cosmic Not vulnerable
(4.15.0-1021.21)
trusty Not vulnerable
(sparc config only)
upstream
Released (4.16~rc5)
xenial Not vulnerable
(sparc config only)
linux-azure
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.15.0-1023.24)
cosmic Not vulnerable
(4.15.0-1023.24)
trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
upstream
Released (4.16~rc5)
xenial Not vulnerable
(sparc config only)
linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-1004.4~18.04.1)
cosmic Does not exist

trusty Does not exist

upstream
Released (4.16~rc5)
xenial Not vulnerable
(sparc config only)
linux-euclid
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.16~rc5)
xenial Ignored
(was needs-triage ESM criteria)
linux-flo
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 (4.16~rc5)
xenial Ignored
(abandoned)
linux-gcp
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(sparc config only)
cosmic Not vulnerable
(4.15.0-1019.20)
trusty Does not exist

upstream
Released (4.16~rc5)
xenial Not vulnerable
(sparc config only)
linux-gke
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.16~rc5)
xenial Not vulnerable
(sparc config only)
linux-goldfish
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 (4.16~rc5)
xenial Not vulnerable
(sparc config only)
linux-grouper
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 (4.16~rc5)
xenial Does not exist

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

bionic Not vulnerable

cosmic Does not exist

trusty Does not exist

upstream
Released (4.16~rc5)
xenial Not vulnerable
(sparc config only)
linux-hwe-edge
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.18.0-11.12~18.04.1)
cosmic Does not exist

trusty Does not exist

upstream
Released (4.16~rc5)
xenial Not vulnerable
(sparc config only)
linux-kvm
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(sparc config only)
cosmic Not vulnerable
(4.15.0-1021.21)
trusty Does not exist

upstream
Released (4.16~rc5)
xenial Not vulnerable
(sparc config only)
linux-lts-quantal
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.16~rc5)
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

cosmic Does not exist

trusty Does not exist

upstream
Released (4.16~rc5)
xenial 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 (4.16~rc5)
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

cosmic Does not exist

trusty Does not exist

upstream
Released (4.16~rc5)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.16~rc5)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

trusty Ignored
(end of life, was needs-triage)
upstream
Released (4.16~rc5)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.16~rc5)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

trusty Not vulnerable
(sparc config only)
upstream
Released (4.16~rc5)
xenial 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 (4.16~rc5)
xenial Does not exist

linux-mako
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 (4.16~rc5)
xenial Ignored
(abandoned)
linux-manta
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 (4.16~rc5)
xenial Does not exist

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

bionic Not vulnerable
(sparc config only)
cosmic Not vulnerable
(4.15.0-1018.21)
trusty Does not exist

upstream
Released (4.16~rc5)
xenial Not vulnerable
(sparc config only)
linux-raspi2
Launchpad, Ubuntu, Debian
artful Not vulnerable
(sparc config only)
bionic Not vulnerable
(sparc config only)
cosmic Not vulnerable
(4.15.0-1022.24)
trusty Does not exist

upstream
Released (4.16~rc5)
xenial Not vulnerable
(sparc config only)
linux-snapdragon
Launchpad, Ubuntu, Debian
artful Not vulnerable
(sparc config only)
bionic Not vulnerable

cosmic Does not exist

trusty Does not exist

upstream
Released (4.16~rc5)
xenial Not vulnerable
(sparc config only)
linux-ti-omap4
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.16~rc5)
xenial Does not exist

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N