CVE-2018-10021

Published: 11 April 2018

** DISPUTED ** drivers/scsi/libsas/sas_scsi_host.c in the Linux kernel before 4.16 allows local users to cause a denial of service (ata qc leak) by triggering certain failure conditions. NOTE: a third party disputes the relevance of this report because the failure can only occur for physically proximate attackers who unplug SAS Host Bus Adapter cables.

From the Ubuntu Security Team

It was discovered that a memory leak existed in the Serial Attached SCSI (SAS) implementation in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (memory exhaustion).

Priority

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	upstream	Released (4.16~rc7)
	bionic	Released (4.15.0-23.25)
	trusty	Released (3.13.0-157.207)
	xenial	Released (4.4.0-130.156)
	artful	Ignored (end of life)
	cosmic	Not vulnerable (4.15.0-23.25)
	Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by 318aaf34f1179b39fa9c30fa0f3288b645beee39
linux-goldfish Launchpad, Ubuntu, Debian	upstream	Released (4.16~rc7)
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	artful	Does not exist
	cosmic	Does not exist
	xenial	Ignored (end of life, was needs-triage)
linux-grouper Launchpad, Ubuntu, Debian	upstream	Released (4.16~rc7)
	bionic	Does not exist
	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Does not exist
linux-flo Launchpad, Ubuntu, Debian	upstream	Released (4.16~rc7)
	bionic	Does not exist
	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Ignored (abandoned)
linux-aws Launchpad, Ubuntu, Debian	upstream	Released (4.16~rc7)
	bionic	Released (4.15.0-1010.10)
	artful	Does not exist
	cosmic	Not vulnerable (4.15.0-1010.10)
	trusty	Released (4.4.0-1024.25)
	xenial	Released (4.4.0-1062.71)
linux-gke Launchpad, Ubuntu, Debian	upstream	Released (4.16~rc7)
	bionic	Does not exist
	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Ignored (end of standard support, was needs-triage)
linux-azure Launchpad, Ubuntu, Debian	upstream	Released (4.16~rc7)
	bionic	Released (4.15.0-1013.13)
	artful	Does not exist
	cosmic	Not vulnerable (4.15.0-1013.13)
	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	xenial	Released (4.15.0-1013.13~16.04.2)
linux-gcp Launchpad, Ubuntu, Debian	upstream	Released (4.16~rc7)
	bionic	Released (4.15.0-1009.9)
	artful	Does not exist
	cosmic	Not vulnerable (4.15.0-1009.9)
	trusty	Does not exist
	xenial	Released (4.15.0-1014.14~16.04.1)
linux-euclid Launchpad, Ubuntu, Debian	upstream	Released (4.16~rc7)
	bionic	Does not exist
	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Ignored (was needed ESM criteria)
linux-azure-edge Launchpad, Ubuntu, Debian	upstream	Released (4.16~rc7)
	bionic	Not vulnerable (4.18.0-1003.3~18.04.1)
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Released (4.15.0-1013.13)
linux-hwe Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable
	cosmic	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc7)
	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
	trusty	Does not exist
	upstream	Released (4.16~rc7)
	xenial	Released (4.15.0-24.26~16.04.1)
linux-kvm Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Released (4.15.0-1011.11)
	cosmic	Not vulnerable (4.15.0-1011.11)
	trusty	Does not exist
	upstream	Released (4.16~rc7)
	xenial	Released (4.4.0-1029.34)
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~rc7)
	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~rc7)
	xenial	Does not exist
linux-lts-vivid 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~rc7)
	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~rc7)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	trusty	Released (4.4.0-130.156~14.04.1)
	upstream	Released (4.16~rc7)
	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~rc7)
	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~rc7)
	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~rc7)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Released (4.15.0-1008.11)
	cosmic	Not vulnerable (4.15.0-1008.11)
	trusty	Does not exist
	upstream	Released (4.16~rc7)
	xenial	Ignored (end of standard support, was needed)
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Ignored (end of life)
	bionic	Released (4.15.0-1012.13)
	cosmic	Not vulnerable (4.15.0-1021.23)
	trusty	Does not exist
	upstream	Released (4.16~rc7)
	xenial	Released (4.4.0-1092.100)
linux-snapdragon Launchpad, Ubuntu, Debian	artful	Released (4.4.0-1095.100)
	bionic	Not vulnerable
	cosmic	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc7)
	xenial	Released (4.4.0-1095.100)

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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