CVE-2017-1000252

Published: 26 September 2017

The KVM subsystem in the Linux kernel through 4.13.3 allows guest OS users to cause a denial of service (assertion failure, and hypervisor hang or crash) via an out-of bounds guest_irq value, related to arch/x86/kvm/vmx.c and virt/kvm/eventfd.c.

From the Ubuntu Security Team

It was discovered that the KVM subsystem in the Linux kernel did not properly bound guest IRQs. A local attacker in a guest VM could use this to cause a denial of service (host system crash).

Notes

Author	Note
sbeattie	36ae3c0a36b7456432fedce38ae2f7bd3e01a563 appears to be additional hardening
apw	break-fix: efc644048ecde54f016011fe10110addd0de348f 36ae3c0a36b7456432fedce38ae2f7bd3e01a563

Priority

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.13.0-15.16)
	trusty	Not vulnerable
	upstream	Released (4.14~rc1)
	xenial	Released (4.4.0-98.121)
	zesty	Released (4.10.0-38.42)
	Patches: Introduced by efc644048ecde54f016011fe10110addd0de348f Fixed by 3a8b0677fc6180a467e26cc32ce6b0c09a32f9bb
linux-armadaxp Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~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
	trusty	Not vulnerable (4.4.0-1002.2)
	upstream	Released (4.14~rc1)
	xenial	Released (4.4.0-1039.48)
	zesty	Does not exist
linux-azure Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	upstream	Released (4.14~rc1)
	xenial	Released (4.13.0-1005.7)
	zesty	Does not exist
linux-euclid Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Ignored (was needed ESM criteria)
	zesty	Does not exist
linux-flo Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc1)
	xenial	Ignored (abandoned)
	zesty	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Released (4.10.0-1008.8)
	zesty	Does not exist
linux-gke Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Released (4.4.0-1033.33)
	zesty	Does not exist
linux-goldfish Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc1)
	xenial	Not vulnerable
	zesty	Not vulnerable
linux-grouper Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~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
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Released (4.10.0-38.42~16.04.1)
	zesty	Does not exist
linux-kvm Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Released (4.4.0-1009.14)
	zesty	Does not exist
linux-linaro-omap Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-linaro-shared Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-linaro-vexpress Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-quantal Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~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
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-saucy Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~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
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Does not exist
	zesty	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~rc1)
	xenial	Does not exist
	zesty	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~rc1)
	xenial	Does not exist
	zesty	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~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Released (4.4.0-98.121~14.04.1)
	upstream	Released (4.14~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-mako Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc1)
	xenial	Ignored (abandoned)
	zesty	Does not exist
linux-manta Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-oem Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Not vulnerable (4.13.0-1008.9)
	zesty	Does not exist
linux-qcm-msm Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Does not exist
	zesty	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.13.0-1004.4)
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Released (4.4.0-1076.84)
	zesty	Released (4.10.0-1020.23)
linux-snapdragon Launchpad, Ubuntu, Debian	artful	Released (4.4.0-1078.83)
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Released (4.4.0-1078.83)
	zesty	Released (4.4.0-1078.83)
linux-ti-omap4 Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc1)
	xenial	Does not exist
	zesty	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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