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CVE-2011-2695

Published: 28 July 2011

Multiple off-by-one errors in the ext4 subsystem in the Linux kernel before 3.0-rc5 allow local users to cause a denial of service (BUG_ON and system crash) by accessing a sparse file in extent format with a write operation involving a block number corresponding to the largest possible 32-bit unsigned integer.

From the Ubuntu security team

It was discovered that the EXT4 filesystem contained multiple off-by-one flaws. A local attacker could exploit this to crash the system, leading to a denial of service.

Priority

Low

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
hardy Not vulnerable

lucid
Released (2.6.32-35.78)
maverick
Released (2.6.35-30.61)
natty
Released (2.6.38-12.51)
oneiric Not vulnerable
(3.0-3.4)
precise Not vulnerable
(3.1.0-1.1)
quantal Not vulnerable

saucy Not vulnerable

trusty Not vulnerable
(3.11.0-12.19)
upstream
Released (3.0~rc5)
Patches:
Introduced by

a86c61812637c7dd0c57e29880cffd477b62f2e7

Fixed by f17722f917b2f21497deb6edc62fb1683daa08e6
linux-ec2
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (2.6.32-319.39)
maverick Ignored
(binary supplied by "linux" now)
natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.0~rc5)
linux-flo
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

quantal Does not exist

saucy Does not exist

trusty Does not exist
(trusty was not-affected [3.4.0-1.3])
upstream
Released (3.0~rc5)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (2.6.31-611.29)
maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.0~rc5)
linux-goldfish
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

quantal Does not exist

saucy Ignored

trusty Does not exist
(trusty was not-affected [3.4.0-1.7])
upstream
Released (3.0~rc5)
linux-grouper
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

quantal Does not exist

saucy Ignored

trusty Does not exist
(trusty was not-affected [3.1.10-8.28])
upstream
Released (3.0~rc5)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (2.6.35-30.61~lucid1)
maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.0~rc5)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (2.6.38-12.51~lucid1)
maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.0~rc5)
linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Not vulnerable

maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.0~rc5)
linux-maguro
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

quantal Does not exist

saucy Ignored

trusty Does not exist
(trusty was not-affected [3.0.0-3.18])
upstream
Released (3.0~rc5)
linux-mako
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

quantal Does not exist

saucy Ignored

trusty Does not exist
(trusty was not-affected [3.4.0-3.21])
upstream
Released (3.0~rc5)
linux-manta
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

quantal Does not exist

saucy Ignored

trusty Does not exist
(trusty was not-affected [3.4.0-4.19])
upstream
Released (3.0~rc5)
linux-mvl-dove
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (2.6.32-219.37)
maverick
Released (2.6.32-419.37)
natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.0~rc5)
linux-ti-omap4
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Does not exist

maverick
Released (2.6.35-903.26)
natty
Released (2.6.38-1209.16)
oneiric Not vulnerable
(3.0.0-1204.9)
precise Not vulnerable
(3.0.0-1401.2)
quantal Not vulnerable

saucy Not vulnerable

trusty Does not exist

upstream
Released (3.0~rc5)