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	artful	Ignored (reached end-of-life)
	bionic	Not vulnerable (4.15.0-12.13)
	cosmic	Not vulnerable (4.15.0-20.21)
	disco	Not vulnerable (4.18.0-10.11)
	eoan	Not vulnerable (5.0.0-13.14)
	precise	Ignored (was needed ESM criteria)
	trusty	Ignored (was needed ESM criteria)
	upstream	Released (4.16~rc1)
	xenial	Released (4.4.0-166.195)
	Patches: Introduced by 87c8331fcf72e501c3a3c0cdc5c9391ec72f7cf2 Fixed by 0558f33c06bb910e2879e355192227a8e8f0219d
linux-aws Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable (4.15.0-1003.3)
	cosmic	Not vulnerable (4.15.0-1007.7)
	disco	Not vulnerable (4.18.0-1002.3)
	eoan	Not vulnerable (5.0.0-1004.4)
	precise	Does not exist
	trusty	Released (4.4.0-1056.60)
	upstream	Released (4.16~rc1)
	xenial	Released (4.4.0-1096.107)
linux-aws-hwe Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Not vulnerable (4.15.0-1030.31~16.04.1)
linux-azure Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable (4.15.0-1003.3)
	cosmic	Not vulnerable (4.15.0-1009.9)
	disco	Not vulnerable (4.18.0-1003.3)
	eoan	Not vulnerable (5.0.0-1004.4)
	precise	Does not exist
	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	upstream	Released (4.16~rc1)
	xenial	Released (4.15.0-1013.13~16.04.2)
linux-azure-edge Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1003.3)
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Released (4.15.0-1013.13~16.04.2)
linux-euclid Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Ignored (was needed ESM criteria)
linux-flo Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.16~rc1)
	xenial	Ignored (abandoned)
linux-gcp Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable (4.15.0-1003.3)
	cosmic	Not vulnerable (4.15.0-1006.6)
	disco	Not vulnerable (4.18.0-1002.3)
	eoan	Not vulnerable (5.0.0-1004.4)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Released (4.15.0-1014.14~16.04.1)
linux-gcp-edge Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1003.3)
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Does not exist
linux-gke Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Ignored (was needed now end-of-life)
linux-gke-4.15 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1030.32)
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.0.0-1011.11~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Does not exist
linux-goldfish Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.16~rc1)
	xenial	Ignored (was needed now end-of-life)
linux-grouper Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.16~rc1)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable (4.18.0-13.14~18.04.1)
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Released (4.15.0-24.26~16.04.1)
linux-hwe-edge Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable (5.0.0-15.16~18.04.1)
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Released (4.15.0-24.26~16.04.1)
linux-kvm Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable (4.15.0-1003.3)
	cosmic	Not vulnerable (4.15.0-1008.8)
	disco	Not vulnerable (4.18.0-1003.3)
	eoan	Not vulnerable (5.0.0-1004.4)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Released (4.4.0-1060.67)
linux-lts-trusty Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Ignored (was needed ESM criteria)
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Does not exist
linux-lts-utopic Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [end-of-life])
	upstream	Released (4.16~rc1)
	xenial	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [was needs-triage now end-of-life])
	upstream	Released (4.16~rc1)
	xenial	Does not exist
linux-lts-wily Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [end-of-life])
	upstream	Released (4.16~rc1)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Released (4.4.0-166.195~14.04.1)
	upstream	Released (4.16~rc1)
	xenial	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.16~rc1)
	xenial	Does not exist
linux-mako Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.16~rc1)
	xenial	Ignored (abandoned)
linux-manta Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.16~rc1)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable (4.15.0-1002.3)
	cosmic	Not vulnerable (4.15.0-1004.5)
	disco	Not vulnerable (4.15.0-1021.24)
	eoan	Not vulnerable (4.15.0-1035.40)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Ignored (was needed now end-of-life)
linux-oracle Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1007.9)
	cosmic	Not vulnerable (4.15.0-1007.9)
	disco	Not vulnerable (4.15.0-1007.9)
	eoan	Not vulnerable (4.15.0-1011.13)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Not vulnerable (4.15.0-1007.9~16.04.1)
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Ignored (reached end-of-life)
	bionic	Not vulnerable (4.15.0-1006.7)
	cosmic	Not vulnerable (4.15.0-1010.11)
	disco	Not vulnerable (4.18.0-1005.7)
	eoan	Not vulnerable (5.0.0-1006.6)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Released (4.4.0-1124.133)
linux-snapdragon Launchpad, Ubuntu, Debian	artful	Ignored (reached end-of-life)
	bionic	Released (4.15.0-1053.57)
	cosmic	Does not exist
	disco	Not vulnerable (5.0.0-1010.10)
	eoan	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc1)
	xenial	Released (4.4.0-1128.136)

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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