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CVE-2017-18232

Published: 15 March 2018

The Serial Attached SCSI (SAS) implementation in the Linux kernel through 4.15.9 mishandles a mutex within libsas, which allows local users to cause a denial of service (deadlock) by triggering certain error-handling code.

From the Ubuntu Security Team

It was discovered that a race condition existed in the Serial Attached SCSI (SAS) implementation in the Linux kernel when handling certain error conditions. A local attacker could use this to cause a denial of service (kernel deadlock).

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-12.13)
upstream
Released (4.16~rc1)
artful Ignored
(end of life)
cosmic Not vulnerable
(4.15.0-20.21)
disco Not vulnerable
(4.18.0-10.11)
eoan Not vulnerable
(5.0.0-13.14)
trusty Ignored
(was needed ESM criteria)
xenial
Released (4.4.0-166.195)
Patches:
Introduced by

87c8331fcf72e501c3a3c0cdc5c9391ec72f7cf2

Fixed by 0558f33c06bb910e2879e355192227a8e8f0219d
linux-flo
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(abandoned)
linux-goldfish
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

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

upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

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

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

upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

trusty Does not exist

xenial Does not exist

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

upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

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

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

upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

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

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

upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

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

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

upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

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

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

upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

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

upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

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

linux-raspi2
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1006.7)
upstream
Released (4.16~rc1)
artful Ignored
(end of life)
cosmic Not vulnerable
(4.15.0-1010.11)
disco Not vulnerable
(4.18.0-1005.7)
eoan Not vulnerable
(5.0.0-1006.6)
trusty Does not exist

xenial
Released (4.4.0-1124.133)
linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1003.3)
upstream
Released (4.16~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1007.7)
disco Not vulnerable
(4.18.0-1002.3)
eoan Not vulnerable
(5.0.0-1004.4)
trusty
Released (4.4.0-1056.60)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (4.4.0-1096.107)
linux-azure
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1003.3)
upstream
Released (4.16~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1009.9)
disco Not vulnerable
(4.18.0-1003.3)
eoan Not vulnerable
(5.0.0-1004.4)
trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
xenial
Released (4.15.0-1013.13~16.04.2)
linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1003.3)
upstream
Released (4.16~rc1)
cosmic Does not exist

disco Does not exist

eoan Does not exist

trusty Does not exist

xenial
Released (4.15.0-1013.13~16.04.2)
linux-euclid
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

trusty Does not exist

xenial Ignored
(was needed ESM criteria)
linux-gcp
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1003.3)
upstream
Released (4.16~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1006.6)
disco Not vulnerable
(4.18.0-1002.3)
eoan Not vulnerable
(5.0.0-1004.4)
trusty Does not exist

xenial
Released (4.15.0-1014.14~16.04.1)
linux-gcp-edge
Launchpad, Ubuntu, Debian
upstream
Released (4.16~rc1)
bionic Not vulnerable
(4.15.0-1003.3)
cosmic Does not exist

disco Does not exist

eoan Does not exist

trusty Does not exist

xenial Does not exist

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

upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

trusty Does not exist

xenial Ignored
(end of standard support, was needed)
linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1030.32)
upstream
Released (4.16~rc1)
disco Does not exist

eoan Does not exist

xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-1011.11~18.04.1)
upstream
Released (4.16~rc1)
disco Does not exist

eoan Does not exist

xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-13.14~18.04.1)
upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

trusty Does not exist

xenial
Released (4.15.0-24.26~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-15.16~18.04.1)
upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

trusty Does not exist

xenial
Released (4.15.0-24.26~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1003.3)
upstream
Released (4.16~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1008.8)
disco Not vulnerable
(4.18.0-1003.3)
eoan Not vulnerable
(5.0.0-1004.4)
trusty Does not exist

xenial
Released (4.4.0-1060.67)
linux-lts-xenial
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.16~rc1)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

trusty
Released (4.4.0-166.195~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.3)
upstream
Released (4.16~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1004.5)
disco Not vulnerable
(4.15.0-1021.24)
eoan Not vulnerable
(4.15.0-1035.40)
trusty Does not exist

xenial Ignored
(end of standard support, was needed)
linux-snapdragon
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1053.57)
upstream
Released (4.16~rc1)
artful Ignored
(end of life)
cosmic Does not exist

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

trusty Does not exist

xenial
Released (4.4.0-1128.136)
linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.16~rc1)
cosmic Does not exist

disco Does not exist

eoan Does not exist

trusty Does not exist

xenial Not vulnerable
(4.15.0-1030.31~16.04.1)
linux-oracle
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1007.9)
upstream
Released (4.16~rc1)
cosmic Not vulnerable
(4.15.0-1007.9)
disco Not vulnerable
(4.15.0-1007.9)
eoan Not vulnerable
(4.15.0-1011.13)
trusty Does not exist

xenial Not vulnerable
(4.15.0-1007.9~16.04.1)

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