CVE-2017-18200

Published: 26 February 2018

The f2fs implementation in the Linux kernel before 4.14 mishandles reference counts associated with f2fs_wait_discard_bios calls, which allows local users to cause a denial of service (BUG), as demonstrated by fstrim.

Priority

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	artful	Not vulnerable
	trusty	Not vulnerable
	upstream	Released (4.14~rc5)
	xenial	Not vulnerable
	Patches: Introduced by 969d1b180d987c2be02de890d0fff0f66a0e80de Fixed by 638164a2718f337ea224b747cf5977ef143166a4
linux-armadaxp Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-aws Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Not vulnerable
	upstream	Released (4.14~rc5)
	xenial	Not vulnerable
linux-azure Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	upstream	Released (4.14~rc5)
	xenial	Not vulnerable (4.15.0-1013.13~16.04.2)
linux-euclid Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Not vulnerable
linux-flo Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc5)
	xenial	Ignored (abandoned)
linux-gcp Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Not vulnerable (4.15.0-1014.14~16.04.1)
linux-gke Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Not vulnerable
linux-goldfish Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc5)
	xenial	Not vulnerable
linux-grouper Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc5)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Not vulnerable (4.15.0-24.26~16.04.1)
linux-hwe-edge Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Not vulnerable (4.15.0-24.26~16.04.1)
linux-kvm Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Not vulnerable
linux-linaro-omap Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Does not exist
linux-linaro-shared Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Does not exist
linux-linaro-vexpress Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Does not exist
linux-lts-quantal Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	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
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Does not exist
linux-lts-saucy Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	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
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Does not exist
linux-lts-utopic Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	upstream	Released (4.14~rc5)
	xenial	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Ignored (end of life, was needs-triage)
	upstream	Released (4.14~rc5)
	xenial	Does not exist
linux-lts-wily Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	upstream	Released (4.14~rc5)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Not vulnerable
	upstream	Released (4.14~rc5)
	xenial	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc5)
	xenial	Does not exist
linux-mako Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc5)
	xenial	Ignored (abandoned)
linux-manta Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc5)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Not vulnerable
linux-qcm-msm Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Not vulnerable
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Not vulnerable
linux-snapdragon Launchpad, Ubuntu, Debian	artful	Not vulnerable
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	xenial	Not vulnerable
linux-ti-omap4 Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc5)
	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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