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CVE-2011-4621

Published: 23 December 2011

The Linux kernel before 2.6.37 does not properly implement a certain clock-update optimization, which allows local users to cause a denial of service (system hang) via an application that executes code in a loop.

From the Ubuntu Security Team

It was discovered that some import kernel threads can be blocked by a user level process. An unprivileged local user could exploit this flaw to cause a denial of service.

Priority

Low

CVSS 3 base score: 5.5

Status

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

lucid Not vulnerable

maverick
Released (2.6.35-27.47)
natty Not vulnerable
(2.6.37-11.25)
oneiric Not vulnerable
(2.6.39-0.0)
precise Not vulnerable
(3.1.0-1.1)
quantal Not vulnerable
(3.1.0-1.0)
upstream
Released (2.6.37~rc7)
Patches:
Introduced by

a64692a3afd85fe048551ab89142fd5ca99a0dbd

Fixed by f26f9aff6aaf67e9a430d16c266f91b13a5bff64
linux-armadaxp
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Does not exist

natty Does not exist

oneiric Does not exist

precise Not vulnerable
(3.2.0-1600.1)
quantal Not vulnerable
(3.2.0-1602.5)
upstream
Released (2.6.37~rc7)
linux-ec2
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Not vulnerable

maverick Ignored
(binary supplied by "linux" now)
natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

upstream
Released (2.6.37~rc7)
linux-fsl-imx51
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

upstream
Released (2.6.37~rc7)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (2.6.35-28.50~lucid1)
maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

upstream
Released (2.6.37~rc7)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Not vulnerable
(2.6.38-1.27~lucid1)
maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

upstream
Released (2.6.37~rc7)
linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Not vulnerable
(3.0.0-5.6~lucid1)
maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

upstream
Released (2.6.37~rc7)
linux-mvl-dove
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Not vulnerable

maverick Not vulnerable

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

upstream
Released (2.6.37~rc7)
linux-ti-omap4
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Does not exist

maverick
Released (2.6.35-903.30)
natty
Released (2.6.38-1201.2)
oneiric Not vulnerable
(2.6.38-1309.13)
precise Not vulnerable
(3.0.0-1401.2)
quantal Not vulnerable
(3.0.0-1401.2)
upstream
Released (2.6.37~rc7)