CVE-2013-1943

Published: 16 July 2013

The KVM subsystem in the Linux kernel before 3.0 does not check whether kernel addresses are specified during allocation of memory slots for use in a guest's physical address space, which allows local users to gain privileges or obtain sensitive information from kernel memory via a crafted application, related to arch/x86/kvm/paging_tmpl.h and virt/kvm/kvm_main.c.

From the Ubuntu Security Team

Michael S. Tsirkin discovered a flaw in how the Linux kernel's KVM subsystem allocates memory slots for the guest's address space. A local user could exploit this flaw to gain system privileges or obtain sensitive information from kernel memory.

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	lucid	Released (2.6.32-51.113)
	precise	Not vulnerable (3.1.0-1.1)
	quantal	Not vulnerable (3.4.0-1.1)
	raring	Not vulnerable (3.7.0-0.5)
	saucy	Not vulnerable
	trusty	Not vulnerable (3.11.0-12.19)
	upstream	Released (3.0~rc3)
	Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by fa3d315a4ce2c0891cdde262562e710d95fba19e Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by 9e3bb6b6f6a0c535eb053fbf0005a8e79e053374
linux-armadaxp Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Not vulnerable (3.2.0-1600.1)
	quantal	Not vulnerable (3.2.0-1602.5)
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc3)
	This package is not directly supported by the Ubuntu Security Team
linux-ec2 Launchpad, Ubuntu, Debian	lucid	Released (2.6.32-356.69)
	precise	Does not exist
	quantal	Does not exist
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc3)
linux-flo Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Does not exist
	trusty	Does not exist (trusty was not-affected [3.4.0-1.3])
	upstream	Released (3.0~rc3)
linux-fsl-imx51 Launchpad, Ubuntu, Debian	lucid	Ignored (reached end-of-life, does not affect buildd)
	precise	Does not exist
	quantal	Does not exist
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc3)
linux-goldfish Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was not-affected [3.4.0-1.7])
	upstream	Released (3.0~rc3)
linux-grouper Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was not-affected [3.1.10-8.28])
	upstream	Released (3.0~rc3)
linux-linaro-omap Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Ignored (abandoned)
	quantal	Ignored (abandoned)
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc3)
linux-linaro-shared Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Ignored (abandoned)
	quantal	Ignored (abandoned)
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc3)
linux-linaro-vexpress Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Ignored (abandoned)
	quantal	Ignored (abandoned)
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc3)
linux-lts-backport-maverick Launchpad, Ubuntu, Debian	lucid	Ignored (reached end-of-life)
	precise	Does not exist
	quantal	Does not exist
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc3)
linux-lts-quantal Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Not vulnerable (3.5.0-18.29~precise1)
	quantal	Does not exist
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc3)
linux-lts-raring Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Not vulnerable (3.8.0-19.30~precise1)
	quantal	Does not exist
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc3)
linux-maguro Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was not-affected [3.0.0-3.18])
	upstream	Released (3.0~rc3)
linux-mako Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was not-affected [3.4.0-3.21])
	upstream	Released (3.0~rc3)
linux-manta Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was not-affected [3.4.0-4.19])
	upstream	Released (3.0~rc3)
linux-mvl-dove Launchpad, Ubuntu, Debian	lucid	Ignored (reached end-of-life)
	precise	Does not exist
	quantal	Does not exist
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc3)
linux-qcm-msm Launchpad, Ubuntu, Debian	lucid	Ignored (abandoned)
	precise	Ignored (abandoned)
	quantal	Ignored (abandoned)
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc3)
linux-ti-omap4 Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Not vulnerable (3.0.0-1401.2)
	quantal	Not vulnerable (3.4.0-201.2)
	raring	Not vulnerable (3.5.0-213.20)
	saucy	Not vulnerable
	trusty	Does not exist
	upstream	Released (3.0~rc3)

Severity score breakdown

Parameter	Value
Base score	7.8
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Bugs

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