CVE-2018-7480

Published: 25 February 2018

The blkcg_init_queue function in block/blk-cgroup.c in the Linux kernel before 4.11 allows local users to cause a denial of service (double free) or possibly have unspecified other impact by triggering a creation failure.

From the Ubuntu Security Team

It was discovered that a double free error existed in the block layer subsystem of the Linux kernel when setting up a request queue. 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	bionic	Not vulnerable (4.13.0-16.19)
	upstream	Released (4.11~rc1)
	artful	Not vulnerable (4.11.0-10.15)
	trusty	Not vulnerable
	xenial	Released (4.4.0-127.153)
	Patches: Introduced by 994b78327458ea14a1743196ee0560c73ace37f3 Fixed by 9b54d816e00425c3a517514e0d677bb3cec49258
linux-armadaxp Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.11~rc1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-goldfish Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.11~rc1)
	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Ignored (end of life, was needed)
linux-grouper Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.11~rc1)
	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Does not exist
linux-linaro-omap Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.11~rc1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
linux-linaro-shared Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.11~rc1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
linux-linaro-vexpress Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.11~rc1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
linux-lts-quantal Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.11~rc1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-lts-raring Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.11~rc1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
linux-lts-saucy Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.11~rc1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.11~rc1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.11~rc1)
	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Does not exist
linux-mako Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.11~rc1)
	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Ignored (abandoned)
linux-manta Launchpad, Ubuntu, Debian	upstream	Released (4.11~rc1)
	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Does not exist
linux-qcm-msm Launchpad, Ubuntu, Debian	bionic	Does not exist
	upstream	Released (4.11~rc1)
	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
linux-ti-omap4 Launchpad, Ubuntu, Debian	bionic	Does not exist
	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	upstream	Released (4.11~rc1)
linux-aws Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable (4.15.0-1001.1)
	trusty	Released (4.4.0-1022.22)
	upstream	Released (4.11~rc1)
	xenial	Released (4.4.0-1060.69)
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)
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)
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)
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	Released (4.13.0-1002.5)
linux-gke Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Ignored (end of standard support, was needed)
linux-hwe Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Not vulnerable
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Released (4.13.0-26.29~16.04.2)
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 (4.13.0-26.29~16.04.2)
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	Released (4.4.0-1026.31)
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
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
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
linux-lts-xenial Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	trusty	Released (4.4.0-127.153~14.04.1)
	upstream	Released (4.11~rc1)
	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 (4.11~rc1)
	xenial	Not vulnerable (4.13.0-1008.9)
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.13.0-1004.4)
	bionic	Not vulnerable (4.13.0-1005.5)
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Released (4.4.0-1090.98)
linux-snapdragon Launchpad, Ubuntu, Debian	artful	Released (4.4.0-1093.98)
	bionic	Not vulnerable
	trusty	Does not exist
	upstream	Released (4.11~rc1)
	xenial	Released (4.4.0-1093.98)

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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