CVE-2012-2127

Published: 21 June 2012

fs/proc/root.c in the procfs implementation in the Linux kernel before 3.2 does not properly interact with CLONE_NEWPID clone system calls, which allows remote attackers to cause a denial of service (reference leak and memory consumption) by making many connections to a daemon that uses PID namespaces to isolate clients, as demonstrated by vsftpd.

From the Ubuntu security team

Vadim Ponomarev discovered a flaw in the Linux kernel causing a reference leak when PID namespaces are used. A remote attacker could exploit this flaw causing a denial of service.

Priority

Low

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
Patches:
Introduced by 423e0ab086ad8b33626e45fa94ac7613146b7ffa
Fixed by 905ad269c55fc62bee3da29f7b1d1efeba8aa1e1
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (3.2~rc6)