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CVE-2017-13695

Published: 25 August 2017

The acpi_ns_evaluate() function in drivers/acpi/acpica/nseval.c in the Linux kernel through 4.12.9 does not flush the operand cache and causes a kernel stack dump, which allows local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism (in the kernel through 4.9) via a crafted ACPI table.

From the Ubuntu Security Team

Seunghun Han discovered an information leak in the ACPI handling code in the Linux kernel when handling early termination of ACPI table loading. A local attacker could use this to expose sensitive informal (kernel address locations).

Notes

AuthorNote
tyhicks
As of 17.04, KASLR is not yet enabled by default in Ubuntu
sbeattie
drivers/acpi/acpica/nseval.c::AcpiNsEvaluate()

Priority

Negligible

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
cosmic Not vulnerable
(4.17.0-6.7)
disco Not vulnerable
(4.18.0-10.11)
trusty Ignored
(was needed ESM criteria)
xenial
Released (4.4.0-130.156)
zesty Ignored
(end of life)
bionic
Released (4.15.0-34.37)
upstream
Released (4.17~rc1)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by 97f3c0a4b0579b646b6b10ae5a3d59f0441cc12c
linux-armadaxp
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

upstream
Released (4.17~rc1)
bionic Does not exist

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

cosmic Not vulnerable
(4.15.0-1021.21)
disco Not vulnerable
(4.18.0-1002.3)
trusty
Released (4.4.0-1024.25)
xenial
Released (4.4.0-1062.71)
zesty Does not exist

bionic
Released (4.15.0-1021.21)
upstream
Released (4.17~rc1)
linux-aws-hwe
Launchpad, Ubuntu, Debian
cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial Not vulnerable
(4.15.0-1030.31~16.04.1)
bionic Does not exist

upstream
Released (4.17~rc1)
linux-azure
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Not vulnerable
(4.15.0-1023.24)
disco Not vulnerable
(4.18.0-1003.3)
trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
xenial
Released (4.15.0-1023.24~16.04.1)
zesty Does not exist

bionic
Released (4.15.0-1023.24)
upstream
Released (4.17~rc1)
linux-azure-edge
Launchpad, Ubuntu, Debian
cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial
Released (4.15.0-1023.24~16.04.1)
bionic
Released (4.15.0-1023.24)
upstream
Released (4.17~rc1)
linux-euclid
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial Ignored
(was needs-triage ESM criteria)
zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
linux-flo
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

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

upstream
Released (4.17~rc1)
bionic Does not exist

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

cosmic Not vulnerable
(4.15.0-1019.20)
disco Not vulnerable
(4.18.0-1002.3)
trusty Does not exist

xenial
Released (4.15.0-1019.20~16.04.1)
zesty Does not exist

bionic
Released (4.15.0-1019.20)
upstream
Released (4.17~rc1)
linux-gcp-edge
Launchpad, Ubuntu, Debian
cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(4.18.0-1004.5~18.04.1)
upstream
Released (4.17~rc1)
linux-gke
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

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

bionic Not vulnerable

upstream
Released (4.17~rc1)
linux-goldfish
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(end of life, was needed)
zesty Ignored
(end of life)
bionic Does not exist

upstream
Released (4.17~rc1)
linux-grouper
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

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

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
linux-hwe
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial
Released (4.15.0-34.37~16.04.1)
zesty Does not exist

bionic Not vulnerable
(4.18.0-13.14~18.04.1)
upstream
Released (4.17~rc1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial
Released (4.15.0-34.37~16.04.1)
zesty Does not exist

upstream
Released (4.17~rc1)
bionic Not vulnerable
(5.0.0-14.15~18.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Not vulnerable
(4.15.0-1021.21)
disco Not vulnerable
(4.18.0-1003.3)
trusty Does not exist

xenial
Released (4.4.0-1029.34)
zesty Does not exist

bionic
Released (4.15.0-1021.21)
upstream
Released (4.17~rc1)
linux-linaro-omap
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
linux-linaro-shared
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
linux-lts-quantal
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
linux-lts-saucy
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
linux-lts-utopic
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

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

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
linux-lts-vivid
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Ignored
(end of life, was needs-triage)
xenial Does not exist

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
linux-lts-wily
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

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

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
linux-lts-xenial
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty
Released (4.4.0-130.156~14.04.1)
xenial Does not exist

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
linux-maguro
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

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

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
linux-mako
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

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

bionic Does not exist

upstream
Released (4.17~rc1)
linux-manta
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

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

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
linux-oem
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Not vulnerable
(4.15.0-1018.21)
disco Not vulnerable
(4.15.0-1021.24)
trusty Does not exist

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

bionic
Released (4.15.0-1018.21)
upstream
Released (4.17~rc1)
linux-oracle
Launchpad, Ubuntu, Debian
cosmic Not vulnerable
(4.15.0-1007.9)
disco Not vulnerable
(4.15.0-1007.9)
trusty Does not exist

xenial Not vulnerable
(4.15.0-1007.9~16.04.1)
bionic Not vulnerable
(4.15.0-1007.9)
upstream
Released (4.17~rc1)
linux-qcm-msm
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)
linux-raspi2
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
cosmic Not vulnerable
(4.15.0-1022.24)
disco Not vulnerable
(4.18.0-1005.7)
trusty Does not exist

xenial
Released (4.4.0-1092.100)
zesty Ignored
(end of life)
bionic
Released (4.15.0-1022.24)
upstream
Released (4.17~rc1)
linux-snapdragon
Launchpad, Ubuntu, Debian
artful
Released (4.4.0-1095.100)
cosmic Does not exist

disco Not vulnerable
(5.0.0-1010.10)
trusty Does not exist

xenial
Released (4.4.0-1095.100)
zesty Ignored
(end of life)
bionic
Released (4.15.0-1053.57)
upstream
Released (4.17~rc1)
linux-ti-omap4
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

xenial Does not exist

zesty Does not exist

bionic Does not exist

upstream
Released (4.17~rc1)

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