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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

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
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
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-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
(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-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
(end of life)
quantal Ignored
(end of life)
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
(end of life)
quantal Ignored
(end of life)
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
(end of life)
quantal Ignored
(end of life)
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
(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
(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
(end of life)
precise Ignored
(end of life)
quantal Ignored
(end of life)
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