CVE-2015-7513

Published: 31 December 2015

arch/x86/kvm/x86.c in the Linux kernel before 4.4 does not reset the PIT counter values during state restoration, which allows guest OS users to cause a denial of service (divide-by-zero error and host OS crash) via a zero value, related to the kvm_vm_ioctl_set_pit and kvm_vm_ioctl_set_pit2 functions.

From the Ubuntu Security Team

It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash).

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

6.5

Score breakdown

Status

Package	Release	Status
linux-armadaxp Launchpad, Ubuntu, Debian	trusty	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	precise	Released (3.2.0-1661.85)
	upstream	Released (4.4~rc7)
	This package is not directly supported by the Ubuntu Security Team
linux-flo Launchpad, Ubuntu, Debian	zesty	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	vivid	Ignored (end of life)
	wily	Ignored (end of life)
	xenial	Ignored (abandoned)
	yakkety	Ignored (end of life)
	upstream	Released (4.4~rc7)
linux-fsl-imx51 Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-goldfish Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	vivid	Ignored (end of life)
	wily	Ignored (end of life)
	xenial	Ignored (abandoned)
	yakkety	Ignored (end of life)
	zesty	Ignored (end of life)
	upstream	Released (4.4~rc7)
linux-grouper Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-hwe Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	xenial	Not vulnerable (4.8.0-36.36~16.04.1)
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-hwe-edge Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	xenial	Not vulnerable (4.8.0-36.36~16.04.1)
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-linaro-omap Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	trusty	Does not exist
	upstream	Released (4.4~rc7)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-linaro-shared Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	trusty	Does not exist
	upstream	Released (4.4~rc7)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-linaro-vexpress Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	trusty	Does not exist
	upstream	Released (4.4~rc7)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-quantal Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	trusty	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
	This package is not directly supported by the Ubuntu Security Team
linux-lts-raring Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	trusty	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-lts-saucy Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	trusty	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
	This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty Launchpad, Ubuntu, Debian	precise	Released (3.13.0-77.121~precise1)
	trusty	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-lts-utopic Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Released (3.16.0-60.80~14.04.1)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-lts-vivid Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Released (3.19.0-49.55~14.04.1)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-lts-wily Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Released (4.2.0-27.32~14.04.1)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-lts-xenial Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Not vulnerable (4.4.0-13.29~14.04.1)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-maguro Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-mako Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	vivid	Ignored (end of life)
	wily	Ignored (end of life)
	xenial	Ignored (abandoned)
	yakkety	Ignored (end of life)
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-manta Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	vivid	Ignored (end of life)
	wily	Ignored (end of life)
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-qcm-msm Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	trusty	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-raspi2 Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	vivid	Does not exist
	wily	Released (4.2.0-1022.29)
	xenial	Not vulnerable (4.4.0-1003.4)
	yakkety	Not vulnerable (4.4.0-1009.10)
	zesty	Not vulnerable (4.8.0-1013.15)
	upstream	Released (4.4~rc7)
linux-snapdragon Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	wily	Does not exist
	xenial	Not vulnerable (4.4.0-1012.12)
	yakkety	Not vulnerable (4.4.0-1012.12)
	zesty	Not vulnerable (4.4.0-1029.32)
	upstream	Released (4.4~rc7)
linux-ti-omap4 Launchpad, Ubuntu, Debian	precise	Released (3.2.0-1476.99)
	trusty	Does not exist
	upstream	Released (4.4~rc7)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux Launchpad, Ubuntu, Debian	precise	Released (3.2.0-98.138)
	trusty	Released (3.13.0-77.121)
	vivid	Released (3.19.0-49.55)
	wily	Released (4.2.0-27.32)
	xenial	Not vulnerable (4.4.0-2.16)
	yakkety	Not vulnerable (4.4.0-21.37)
	zesty	Not vulnerable (4.8.0-22.24)
	upstream	Released (4.4~rc7)
	Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by 0185604c2d82c560dab2f2933a18f797e74ab5a8
linux-2.6 Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-aws Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Not vulnerable (4.4.0-1002.2)
	xenial	Not vulnerable (4.4.0-1001.10)
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)
linux-gke Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	xenial	Not vulnerable (4.4.0-1003.3)
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.4~rc7)

Severity score breakdown

Parameter	Value
Base score	6.5
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

References

Bugs

https://launchpad.net/bugs/1530956

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