CVE-2018-6927

Published: 12 February 2018

The futex_requeue function in kernel/futex.c in the Linux kernel before 4.14.15 might allow attackers to cause a denial of service (integer overflow) or possibly have unspecified other impact by triggering a negative wake or requeue value.

From the Ubuntu Security Team

It was discovered that an integer overflow error existed in the futex implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash).

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	upstream	Released (4.15~rc9)
	bionic	Not vulnerable (4.15.0-10.11)
	trusty	Released (3.13.0-153.203)
	xenial	Released (4.4.0-119.143)
	artful	Released (4.13.0-46.51)
	Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by fbe0e839d1e22d88810f3ee3e2f1479be4c0aa4a
linux-armadaxp Launchpad, Ubuntu, Debian	upstream	Released (4.15~rc9)
	bionic	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	artful	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-goldfish Launchpad, Ubuntu, Debian	upstream	Released (4.15~rc9)
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	artful	Does not exist
	xenial	Ignored (end of life, was needed)
linux-grouper Launchpad, Ubuntu, Debian	bionic	Does not exist
	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.15~rc9)
	xenial	Does not exist
linux-flo Launchpad, Ubuntu, Debian	upstream	Released (4.15~rc9)
	bionic	Does not exist
	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Ignored (abandoned)
linux-lts-utopic Launchpad, Ubuntu, Debian	upstream	Released (4.15~rc9)
	bionic	Does not exist
	artful	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	xenial	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	upstream	Released (4.15~rc9)
	bionic	Does not exist
	artful	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
	artful	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	upstream	Released (4.15~rc9)
	xenial	Does not exist
linux-aws Launchpad, Ubuntu, Debian	upstream	Released (4.15~rc9)
	bionic	Not vulnerable (4.15.0-1001.1)
	artful	Does not exist
	trusty	Released (4.4.0-1016.16)
	xenial	Released (4.4.0-1054.63)
linux-hwe Launchpad, Ubuntu, Debian	upstream	Released (4.15~rc9)
	bionic	Not vulnerable
	artful	Does not exist
	trusty	Does not exist
	xenial	Released (4.15.0-24.26~16.04.1)
linux-hwe-edge Launchpad, Ubuntu, Debian	upstream	Released (4.15~rc9)
	bionic	Released (4.18.0-8.9~18.04.1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Released (4.15.0-24.26~16.04.1)
linux-gke Launchpad, Ubuntu, Debian	upstream	Released (4.15~rc9)
	bionic	Does not exist
	artful	Does not exist
	trusty	Does not exist
	xenial	Ignored (end of standard support, was needed)
linux-azure Launchpad, Ubuntu, Debian	upstream	Released (4.15~rc9)
	bionic	Not vulnerable (4.15.0-1002.2)
	artful	Does not exist
	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 (4.15~rc9)
	bionic	Not vulnerable (4.15.0-1001.1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Released (4.15.0-1014.14~16.04.1)
linux-kvm Launchpad, Ubuntu, Debian	upstream	Released (4.15~rc9)
	bionic	Not vulnerable (4.15.0-1002.2)
	artful	Does not exist
	trusty	Does not exist
	xenial	Released (4.4.0-1020.25)
linux-euclid Launchpad, Ubuntu, Debian	upstream	Released (4.15~rc9)
	bionic	Does not exist
	artful	Does not exist
	trusty	Does not exist
	xenial	Ignored (was needed ESM criteria)
linux-ti-omap4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	artful	Does not exist
	bionic	Does not exist
	upstream	Released (4.15~rc9)
linux-linaro-omap Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	artful	Does not exist
	bionic	Does not exist
	upstream	Released (4.15~rc9)
linux-linaro-shared Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	artful	Does not exist
	bionic	Does not exist
	upstream	Released (4.15~rc9)
linux-linaro-vexpress Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	artful	Does not exist
	bionic	Does not exist
	upstream	Released (4.15~rc9)
linux-qcm-msm Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	artful	Does not exist
	bionic	Does not exist
	upstream	Released (4.15~rc9)
linux-lts-quantal Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	artful	Does not exist
	bionic	Does not exist
	upstream	Released (4.15~rc9)
	This package is not directly supported by the Ubuntu Security Team
linux-lts-raring Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	artful	Does not exist
	bionic	Does not exist
	upstream	Released (4.15~rc9)
linux-lts-saucy Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	artful	Does not exist
	bionic	Does not exist
	upstream	Released (4.15~rc9)
	This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	artful	Does not exist
	bionic	Does not exist
	upstream	Released (4.15~rc9)
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~rc9)
	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~rc9)
	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~rc9)
	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~rc9)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable (4.15.0-1002.3)
	trusty	Does not exist
	upstream	Released (4.15~rc9)
	xenial	Released (4.13.0-1031.35)
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Released (4.13.0-1023.24)
	bionic	Not vulnerable (4.15.0-1006.7)
	trusty	Does not exist
	upstream	Released (4.15~rc9)
	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~rc9)
	xenial	Released (4.4.0-1088.93)

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:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

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