CVE-2012-2136

Published: 29 May 2012

The sock_alloc_send_pskb function in net/core/sock.c in the Linux kernel before 3.4.5 does not properly validate a certain length value, which allows local users to cause a denial of service (heap-based buffer overflow and system crash) or possibly gain privileges by leveraging access to a TUN/TAP device.

From the Ubuntu security team

An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges.

Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (3.5~rc1)