CVE-2012-1179

Published: 23 April 2012

The Linux kernel before 3.3.1, when KVM is used, allows guest OS users to cause a denial of service (host OS crash) by leveraging administrative access to the guest OS, related to the pmd_none_or_clear_bad function and page faults for huge pages. A privileged user in the KVM guest can use this flaw to crash the host. An unprivileged local user could use this flaw to crash the system.

From the Ubuntu security team

A flaw was found in the Linux kernel's handling of paged memory. A local unprivileged user, or a privileged user within a KVM guest, could exploit this flaw to crash the system.

Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
Patches:
Introduced by 4c76d9d1fb9b21fa10c9e4c1fab2875018a88aa1
Fixed by 1a5a9906d4e8d1976b701f889d8f35d54b928f25
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)

Notes

AuthorNote
jdstrand
linux-armadaxp is maintained by OEM
apw
this is only tickled when a page is converted to a transparent hugepage
this support was introduced after maverick, natty is not affected as
transparent huge pages are off in the configuration.

References

Bugs