CVE-2016-9083

Published: 27 November 2016

drivers/vfio/pci/vfio_pci.c in the Linux kernel through 4.8.11 allows local users to bypass integer overflow checks, and cause a denial of service (memory corruption) or have unspecified other impact, by leveraging access to a vfio PCI device file for a VFIO_DEVICE_SET_IRQS ioctl call, aka a "state machine confusion bug."

From the Ubuntu Security Team

Vlad Tsyrklevich discovered an integer overflow vulnerability in the VFIO PCI driver for the Linux kernel. A local attacker with access to a vfio PCI device file could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Notes

Author	Note
jdstrand	android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.10 and earlier preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support

Author

Note

jdstrand

android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.10 and earlier preview kernels
linux-lts-saucy no longer receives official support
linux-lts-quantal no longer receives official support

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
linux-armadaxp Launchpad, Ubuntu, Debian	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
	artful	Does not exist
	precise	Not vulnerable
	trusty	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)
	xenial	Released (4.4.0-1018.27)
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-azure Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	xenial	Not vulnerable (4.11.0-1009.9)
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-euclid Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Ignored (was needed ESM criteria)
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-flo Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	xenial	Not vulnerable
	yakkety	Not vulnerable
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-gcp Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Not vulnerable (4.10.0-1004.4)
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-gke Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	xenial	Released (4.4.0-1014.14)
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-goldfish Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	xenial	Not vulnerable
	yakkety	Not vulnerable
	zesty	Not vulnerable
	upstream	Released (4.9~rc4)
linux-grouper Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-hwe Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	xenial	Released (4.10.0-27.30~16.04.2)
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-hwe-edge Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	xenial	Released (4.10.0-27.30~16.04.2)
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-kvm Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Not vulnerable (4.4.0-1004.9)
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-linaro-omap Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Ignored (end of life)
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-linaro-shared Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Ignored (end of life)
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-linaro-vexpress Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Ignored (end of life)
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-lts-quantal Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Ignored (end of life)
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
	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
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-lts-saucy Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Ignored (end of life)
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
	This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Ignored (end of life)
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-lts-utopic Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-lts-vivid Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Ignored (end of life, was needed)
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-lts-wily Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-lts-xenial Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Released (4.4.0-79.100~14.04.1)
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-maguro Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-mako Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	xenial	Not vulnerable
	yakkety	Not vulnerable
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-manta Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-oem Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Not vulnerable (4.13.0-1008.9)
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-qcm-msm Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Ignored (end of life)
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.10.0-1004.6)
	precise	Does not exist
	trusty	Does not exist
	xenial	Released (4.4.0-1057.64)
	yakkety	Ignored (end of life)
	zesty	Not vulnerable (4.10.0-1001.3)
	upstream	Released (4.9~rc4)
linux-snapdragon Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.4.0-1059.63)
	precise	Does not exist
	trusty	Does not exist
	xenial	Released (4.4.0-1059.63)
	yakkety	Released (4.4.0-1059.63)
	zesty	Released (4.4.0-1059.63)
	upstream	Released (4.9~rc4)
linux-ti-omap4 Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Not vulnerable
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.9~rc4)
linux Launchpad, Ubuntu, Debian	upstream	Released (4.9~rc4)
	artful	Not vulnerable (4.10.0-19.21)
	precise	Not vulnerable
	trusty	Released (3.13.0-132.181)
	xenial	Released (4.4.0-79.100)
	yakkety	Ignored (end of life)
	zesty	Not vulnerable (4.9.0-11.12)
	Patches: Introduced by 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 Fixed by 05692d7005a364add85c6e25a6c4447ce08f913a

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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