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CVE-2011-2491

Published: 06 October 2011

The Network Lock Manager (NLM) protocol implementation in the NFS client functionality in the Linux kernel before 3.0 allows local users to cause a denial of service (system hang) via a LOCK_UN flock system call.

From the Ubuntu security team

Vasily Averin discovered that the NFS Lock Manager (NLM) incorrectly handled unlock requests. A local attacker could exploit this to cause a denial of service.

Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(3.11.0-12.19)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by 0b760113a3a155269a3fba93a409c640031dd68f
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.4.0-1.3])
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.4.0-1.9])
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.1.10-8.28])
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-backport-natty
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
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 (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.19.0-18.18~14.04.1])
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.0.0-3.18])
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.4.0-3.21])
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.4.0-4.19])
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (3.0~rc5)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist