CVE-2013-0914

Published: 22 March 2013

The flush_signal_handlers function in kernel/signal.c in the Linux kernel before 3.8.4 preserves the value of the sa_restorer field across an exec operation, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application containing a sigaction system call.

From the Ubuntu security team

Emese Revfy discovered that in the Linux kernel signal handlers could leak address information across an exec, making it possible to by pass ASLR (Address Space Layout Randomization). A local user could use this flaw to by pass ASLR to reliably deliver an exploit payload that would otherwise be stopped (by ASLR).

Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable
(4.2.0-16.19)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(3.11.0-12.19)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by 2ca39528c01a933f6689cd6505ce65bd6d68a530
linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable
(3.4.0-4.27)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [was needed now end-of-life])
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [was needed now end-of-life])
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.4.0-5.22])
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [was needed now end-of-life])
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.16.0-25.33~14.04.2])
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.19.0-18.18~14.04.1])
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [4.2.0-18.22~14.04.1])
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable
(4.2.0-1013.19)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(4.4.0-13.29~14.04.1)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable
(4.4.0-1012.12)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable
(4.4.0-1001.10)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(4.4.0-1002.2)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable
(4.8.0-36.36~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable
(4.8.0-36.36~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (3.9~rc3)
Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable
(4.4.0-1003.3)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist