CVE-2017-18208

Published: 1 March 2018

The madvise_willneed function in mm/madvise.c in the Linux kernel before 4.14.4 allows local users to cause a denial of service (infinite loop) by triggering use of MADVISE_WILLNEED for a DAX mapping.

From the Ubuntu Security Team

It was discovered that an infinite loop could occur in the madvise(2) implementation in the Linux kernel in certain circumstances. A local attacker could use this to cause a denial of service (system hang).

Priority

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-10.11)
	upstream	Released (4.15~rc2)
	artful	Released (4.13.0-43.48)
	trusty	Released (3.13.0-149.199)
	xenial	Released (4.4.0-119.143)
	Patches: Introduced by fe77ba6f4f97690baa4c756611a07f3cc033f6ae Fixed by 6ea8d958a2c95a1d514015d4e29ba21a8c0a1a91
linux-armadaxp Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.15~rc2)
	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-flo Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.15~rc2)
	artful	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 (4.15~rc2)
	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Ignored (end of life, was needed)
linux-aws Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1001.1)
	upstream	Released (4.15~rc2)
	artful	Does not exist
	trusty	Released (4.4.0-1016.16)
	xenial	Released (4.4.0-1054.63)
linux-azure Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1002.2)
	upstream	Released (4.15~rc2)
	artful	Does not exist
	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	xenial	Released (4.13.0-1018.21)
linux-euclid Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.15~rc2)
	artful	Does not exist
	trusty	Does not exist
	xenial	Ignored (was needed ESM criteria)
linux-gcp Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1001.1)
	upstream	Released (4.15~rc2)
	artful	Does not exist
	trusty	Does not exist
	xenial	Released (4.13.0-1017.21)
linux-gke Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.15~rc2)
	artful	Does not exist
	trusty	Does not exist
	xenial	Ignored (end of standard support, was needed)
linux-hwe Launchpad, Ubuntu, Debian	bionic	Not vulnerable
	upstream	Released (4.15~rc2)
	artful	Does not exist
	trusty	Does not exist
	xenial	Released (4.13.0-43.48~16.04.1)
linux-hwe-edge Launchpad, Ubuntu, Debian	bionic	Released (4.18.0-8.9~18.04.1)
	upstream	Released (4.15~rc2)
	artful	Does not exist
	trusty	Does not exist
	xenial	Released (4.13.0-43.48~16.04.1)
linux-kvm Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1002.2)
	upstream	Released (4.15~rc2)
	artful	Does not exist
	trusty	Does not exist
	xenial	Released (4.4.0-1020.25)
linux-oem Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1002.3)
	upstream	Released (4.15~rc2)
	artful	Does not exist
	trusty	Does not exist
	xenial	Released (4.13.0-1028.31)
linux-grouper Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.15~rc2)
	xenial	Does not exist
linux-linaro-omap Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.15~rc2)
	xenial	Does not exist
linux-linaro-shared Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.15~rc2)
	xenial	Does not exist
linux-linaro-vexpress Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.15~rc2)
	xenial	Does not exist
linux-lts-quantal Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.15~rc2)
	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 (4.15~rc2)
	xenial	Does not exist
linux-lts-saucy Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.15~rc2)
	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 (4.15~rc2)
	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 (4.15~rc2)
	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 (4.15~rc2)
	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 (4.15~rc2)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Released (4.4.0-119.143~14.04.1)
	upstream	Released (4.15~rc2)
	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 (4.15~rc2)
	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 (4.15~rc2)
	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 (4.15~rc2)
	xenial	Does not exist
linux-qcm-msm Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.15~rc2)
	xenial	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Released (4.13.0-1020.21)
	bionic	Not vulnerable (4.15.0-1006.7)
	trusty	Does not exist
	upstream	Released (4.15~rc2)
	xenial	Released (4.4.0-1086.94)
linux-snapdragon Launchpad, Ubuntu, Debian	artful	Released (4.4.0-1088.93)
	bionic	Not vulnerable
	trusty	Does not exist
	upstream	Released (4.15~rc2)
	xenial	Released (4.4.0-1088.93)
linux-ti-omap4 Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.15~rc2)
	xenial	Does not exist

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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