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CVE-2011-4131

Published: 17 May 2012

The NFSv4 implementation in the Linux kernel before 3.2.2 does not properly handle bitmap sizes in GETACL replies, which allows remote NFS servers to cause a denial of service (OOPS) by sending an excessive number of bitmap words.

From the Ubuntu security team

Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service.

Notes

AuthorNote
jdstrand
e5012d1f3861d18c7f3814e757c1c3ab3741dbcd is incomplete
http://www.spinics.net/lists/linux-nfs/msg25288.html is proposed
patch
apw
http://www.spinics.net/lists/linux-nfs/msg25746.html implies the proposed
patch needs further work, awaiting resubmission
http://www.spinics.net/lists/linux-nfs/msg26023.html looks to be the
fixed patch, waiting on feedback
now upstream as bf118a342f10dafe44b14451a1392c3254629a1f
jj
removed original incomplete e5012d1f3861d18c7f3814e757c1c3ab3741dbcd
as breakfix
jdstrand
too intrusive to backport. Requires connecting to malicious NFS v4
server
Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
hardy Ignored
(reached end-of-life)
lucid Ignored
(see note)
maverick Ignored
(reached end-of-life)
natty
Released (2.6.38-15.60)
oneiric
Released (3.0.0-21.35)
precise Not vulnerable
(3.2.0-12.20)
quantal Not vulnerable
(3.4.0-1.1)
raring Not vulnerable
(3.7.0-0.5)
saucy Not vulnerable
(3.9.0-0.2)
trusty Not vulnerable
(3.11.0-12.19)
upstream
Released (3.3~rc1)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by bf118a342f10dafe44b14451a1392c3254629a1f
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
(3.2.0-1600.1)
raring Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.3~rc1)
linux-ec2
Launchpad, Ubuntu, Debian
hardy Does not exist

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

oneiric Does not exist

precise Does not exist

quantal Does not exist

raring Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.3~rc1)
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 (3.3~rc1)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Ignored
(reached end-of-life)
maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

raring Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.3~rc1)
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 [3.4.0-1.9])
upstream
Released (3.3~rc1)
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 ignored [see note])
upstream
Released (3.3~rc1)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Ignored
(reached end-of-life)
maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

raring Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.3~rc1)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (2.6.38-15.60~lucid1)
maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

raring Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.3~rc1)
linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (3.0.0-21.35~lucid1)
maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

raring Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.3~rc1)
linux-lts-quantal
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Does not exist

oneiric Does not exist

precise Not vulnerable
(3.5.0-18.29~precise1)
quantal Does not exist

raring Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.3~rc1)
linux-lts-raring
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Does not exist

oneiric Does not exist

precise Not vulnerable
(3.8.0-19.30~precise1)
quantal Does not exist

raring Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.3~rc1)
linux-lts-saucy
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Not vulnerable
(3.11.0-13.20~precise2)
quantal Does not exist

raring Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.3~rc1)
linux-lts-trusty
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Not vulnerable
(3.13.0-24.46~precise1)
saucy Does not exist

trusty Does not exist

upstream
Released (3.3~rc1)
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 ignored [see note])
upstream
Released (3.3~rc1)
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 (3.3~rc1)
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 (3.3~rc1)
linux-mvl-dove
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Ignored
(reached end-of-life)
maverick Ignored
(reached end-of-life)
natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

raring Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.3~rc1)
linux-ti-omap4
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Does not exist

maverick Ignored
(reached end-of-life)
natty
Released (2.6.38-1209.25)
oneiric
Released (3.0.0-1211.23)
precise Not vulnerable
(3.2.0-1406.8)
quantal Not vulnerable
(3.2.0-1406.8)
raring Not vulnerable
(3.2.0-1406.8)
saucy Not vulnerable
(3.5.0-223.34)
trusty Does not exist

upstream
Released (3.3~rc1)