CVE-2017-10663

Published: 19 August 2017

The sanity_check_ckpt function in fs/f2fs/super.c in the Linux kernel before 4.12.4 does not validate the blkoff and segno arrays, which allows local users to gain privileges via unspecified vectors.

From the Ubuntu Security Team

It was discovered that the Flash-Friendly File System (f2fs) implementation in the Linux kernel did not properly validate superblock metadata. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.12.0-11.12)
	precise	Ignored (was needed ESM criteria)
	trusty	Released (3.13.0-135.184)
	upstream	Released (4.13~rc1)
	xenial	Released (4.4.0-96.119)
	zesty	Released (4.10.0-38.42)
	Patches: Introduced by aff063e266cbf4754021d8e5d16ee418560906fd Fixed by 15d3042a937c13f5d9244241c7a9c8416ff6e82a
linux-armadaxp Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~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
	precise	Does not exist
	trusty	Not vulnerable (4.4.0-1002.2)
	upstream	Released (4.13~rc1)
	xenial	Released (4.4.0-1035.44)
	zesty	Does not exist
linux-azure Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	upstream	Released (4.13~rc1)
	xenial	Released (4.13.0-1005.7)
	zesty	Does not exist
linux-euclid Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Ignored (was needed ESM criteria)
	zesty	Does not exist
linux-flo Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc1)
	xenial	Ignored (abandoned)
	zesty	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Released (4.10.0-1008.8)
	zesty	Does not exist
linux-gke Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Released (4.4.0-1031.31)
	zesty	Does not exist
linux-goldfish Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc1)
	xenial	Not vulnerable
	zesty	Not vulnerable
linux-grouper Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Released (4.10.0-38.42~16.04.1)
	zesty	Does not exist
linux-hwe-edge Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Released (4.10.0-38.42~16.04.1)
	zesty	Does not exist
linux-kvm Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Released (4.4.0-1007.12)
	zesty	Does not exist
linux-linaro-omap Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-linaro-shared Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-linaro-vexpress Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-quantal Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Ignored (end-of-life)
	trusty	Does not exist
	upstream	Released (4.13~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
	precise	Ignored (end-of-life)
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-saucy Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Ignored (end-of-life)
	trusty	Does not exist
	upstream	Released (4.13~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
	precise	Released (3.13.0-135.184~precise1)
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-utopic Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [out of standard support])
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [was needs-triage now end-of-life])
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-wily Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [out of standard support])
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Released (4.4.0-96.119~14.04.1)
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-mako Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc1)
	xenial	Ignored (abandoned)
	zesty	Does not exist
linux-manta Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-oem Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Not vulnerable (4.13.0-1008.9)
	zesty	Does not exist
linux-qcm-msm Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.13.0-1004.4)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Released (4.4.0-1074.82)
	zesty	Released (4.10.0-1020.23)
linux-snapdragon Launchpad, Ubuntu, Debian	artful	Released (4.4.0-1076.81)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Released (4.4.0-1076.81)
	zesty	Released (4.4.0-1076.81)
linux-ti-omap4 Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.13~rc1)
	xenial	Does not exist
	zesty	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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