CVE-2011-2183

Published: 06 October 2011

Race condition in the scan_get_next_rmap_item function in mm/ksm.c in the Linux kernel before 2.6.39.3, when Kernel SamePage Merging (KSM) is enabled, allows local users to cause a denial of service (NULL pointer dereference) or possibly have unspecified other impact via a crafted application.

From the Ubuntu security team

Andrea Righi discovered a race condition in the KSM memory merging support. If KSM was being used, a local attacker could exploit this to crash the system, leading to a denial of service.

Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc4)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(3.11.0-12.19)
Patches:
Introduced by f8af4da3b4c14e7267c4ffb952079af3912c51c5
Fixed by 2b472611a32a72f4a118c069c2d62a1a3f087afd
linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.4.0-1.3])
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.4.0-1.7])
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.1.10-8.28])
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-backport-natty
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.0.0-3.18])
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.4.0-3.21])
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.4.0-4.19])
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist