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

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

References

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