CVE-2017-10661

Published: 19 August 2017

Race condition in fs/timerfd.c in the Linux kernel before 4.10.15 allows local users to gain privileges or cause a denial of service (list corruption or use-after-free) via simultaneous file-descriptor operations that leverage improper might_cancel queueing.

From the Ubuntu Security Team

Dmitry Vyukov discovered that a race condition existed in the timerfd subsystem of the Linux kernel when handling might_cancel queuing. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Priority

Cvss 3 Severity Score

7.0

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.10.0-22.24)
	bionic	Not vulnerable (4.13.0-16.19)
	trusty	Released (3.13.0-135.184)
	upstream	Released (4.11~rc1)
	xenial	Released (4.4.0-79.100)
	zesty	Released (4.10.0-22.24)
	Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by 1e38da300e1e395a15048b0af1e5305bd91402f6
linux-armadaxp Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Does not exist
	zesty	Does not exist
	This package is not directly supported by the Ubuntu Security Team
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 (4.11~rc1)
	xenial	Released (4.4.0-1018.27)
	zesty	Does not exist
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 (4.11~rc1)
	xenial	Not vulnerable (4.11.0-1009.9)
	zesty	Does not exist
linux-euclid Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Ignored (was needed ESM criteria)
	zesty	Does not exist
linux-flo Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.11~rc1)
	xenial	Ignored (abandoned)
	zesty	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable (4.15.0-1001.1)
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Not vulnerable (4.10.0-1004.4)
	zesty	Does not exist
linux-gke Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Released (4.4.0-1014.14)
	zesty	Does not exist
linux-goldfish Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.11~rc1)
	xenial	Ignored (end of life, was needed)
	zesty	Ignored (end of life)
linux-grouper Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.11~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Released (4.10.0-27.30~16.04.2)
	zesty	Does not exist
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 (4.11~rc1)
	xenial	Released (4.10.0-27.30~16.04.2)
	zesty	Does not exist
linux-kvm Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable (4.15.0-1002.2)
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Not vulnerable (4.4.0-1004.9)
	zesty	Does not exist
linux-linaro-omap Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-linaro-shared Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-linaro-vexpress Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-quantal Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Does not exist
	zesty	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 (4.11~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-saucy Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Does not exist
	zesty	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 (4.11~rc1)
	xenial	Does not exist
	zesty	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 (4.11~rc1)
	xenial	Does not exist
	zesty	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 (4.11~rc1)
	xenial	Does not exist
	zesty	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 (4.11~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Released (4.4.0-79.100~14.04.1)
	upstream	Released (4.11~rc1)
	xenial	Does not exist
	zesty	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 (4.11~rc1)
	xenial	Does not exist
	zesty	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 (4.11~rc1)
	xenial	Ignored (abandoned)
	zesty	Does not exist
linux-manta Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.11~rc1)
	xenial	Does not exist
	zesty	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 (4.11~rc1)
	xenial	Not vulnerable (4.13.0-1008.9)
	zesty	Does not exist
linux-qcm-msm Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.10.0-1006.8)
	bionic	Not vulnerable (4.13.0-1005.5)
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Released (4.4.0-1057.64)
	zesty	Released (4.10.0-1006.8)
linux-snapdragon Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.4.0-1059.63)
	bionic	Not vulnerable
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Released (4.4.0-1059.63)
	zesty	Released (4.4.0-1059.63)
linux-ti-omap4 Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Does not exist
	zesty	Does not exist

Severity score breakdown

Parameter	Value
Base score	7.0
Attack vector	Local
Attack complexity	High
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Join the discussion

Canonical is offering Expanded Security Maintenance

Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.

Find out more about ESM ›