CVE-2017-18079

Published: 29 January 2018

drivers/input/serio/i8042.c in the Linux kernel before 4.12.4 allows attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact because the port->exists value can change after it is validated.

From the Ubuntu Security Team

It was discovered that a race condition existed in the i8042 serial device driver implementation in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.13.0-16.19)
	upstream	Released (4.13~rc1)
	artful	Not vulnerable (4.12.0-11.12)
	trusty	Released (3.13.0-149.199)
	xenial	Released (4.4.0-93.116)
	Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by 340d394a789518018f834ff70f7534fc463d3226
linux-armadaxp Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.13~rc1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-euclid Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.13~rc1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Ignored (was needs-triage ESM criteria)
linux-gcp Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1001.1)
	upstream	Released (4.13~rc1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Released (4.13.0-1002.5)
linux-kvm Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1002.2)
	upstream	Released (4.13~rc1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Released (4.4.0-1007.12)
linux-oem Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1002.3)
	upstream	Released (4.13~rc1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Not vulnerable (4.13.0-1008.9)
linux-qcm-msm Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
linux-aws Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable (4.15.0-1001.1)
	trusty	Not vulnerable (4.4.0-1002.2)
	upstream	Released (4.13~rc1)
	xenial	Released (4.4.0-1032.41)
linux-azure Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable (4.15.0-1002.2)
	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	upstream	Released (4.13~rc1)
	xenial	Released (4.13.0-1005.7)
linux-flo Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc1)
	xenial	Ignored (abandoned)
linux-gke Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Released (4.4.0-1028.28)
linux-goldfish Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc1)
	xenial	Ignored (end of life, was needed)
linux-grouper Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc1)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Released (4.13.0-26.29~16.04.2)
linux-hwe-edge Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Released (4.18.0-8.9~18.04.1)
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Released (4.13.0-26.29~16.04.2)
linux-linaro-omap Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
linux-linaro-shared Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
linux-linaro-vexpress Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
linux-lts-quantal Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-lts-raring Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
linux-lts-saucy Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
linux-lts-utopic Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	upstream	Released (4.13~rc1)
	xenial	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Ignored (end of life, was needs-triage)
	upstream	Released (4.13~rc1)
	xenial	Does not exist
linux-lts-wily Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	upstream	Released (4.13~rc1)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Released (4.4.0-93.116~14.04.1)
	upstream	Released (4.13~rc1)
	xenial	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc1)
	xenial	Does not exist
linux-mako Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc1)
	xenial	Ignored (abandoned)
linux-manta Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc1)
	xenial	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.13.0-1004.4)
	bionic	Not vulnerable (4.13.0-1005.5)
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Released (4.4.0-1071.79)
linux-snapdragon Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.4.0-1073.78)
	bionic	Not vulnerable
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Released (4.4.0-1073.78)
linux-ti-omap4 Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist

Severity score breakdown

Parameter	Value
Base score	7.8
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

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