CVE-2011-4086

Published: 09 February 2012

The journal_unmap_buffer function in fs/jbd2/transaction.c in the Linux kernel before 3.3.1 does not properly handle the _Delay and _Unwritten buffer head states, which allows local users to cause a denial of service (system crash) by leveraging the presence of an ext4 filesystem that was mounted with a journal.

From the Ubuntu security team

A flaw was found in the Linux's kernels ext4 file system when mounted with a journal. A local, unprivileged user could exploit this flaw to cause a denial of service.

Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by 15291164b22a357cb211b618adfef4fa82fc0de3
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-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-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (3.4~rc1)
linux-lts-raring
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-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)