CVE-2014-8133

Published: 17 December 2014

arch/x86/kernel/tls.c in the Thread Local Storage (TLS) implementation in the Linux kernel through 3.18.1 allows local users to bypass the espfix protection mechanism, and consequently makes it easier for local users to bypass the ASLR protection mechanism, via a crafted application that makes a set_thread_area system call and later reads a 16-bit value.

From the Ubuntu security team

Andy Lutomirski discovered an information leak in the Linux kernel's Thread Local Storage (TLS) implementation allowing users to bypass the espfix to obtain information that could be used to bypass the Address Space Layout Randomization (ASLR) protection mechanism. A local user could exploit this flaw to obtain potentially sensitive information from kernel memory.

Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by 41bdc78544b8a93a9c6814b8bbbfef966272abbe
linux-2.6
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (3.19~rc1)