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CVE-2014-0196

Published: 5 May 2014

The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the "LECHO & !OPOST" case, which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges by triggering a race condition involving read and write operations with long strings.

From the Ubuntu security team

A flaw was discovered in the Linux kernel's pseudo tty (pty) device. An unprivileged user could exploit this flaw to cause a denial of service (system crash) or potentially gain administrator privileges.

Notes

AuthorNote
jdstrand
android kernels (goldfish, grouper, maguro, mako and manta) are not
supported on the Ubuntu Touch 13.10 preview kernels
android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.04 preview kernels
Priority

Critical

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
Patches:
Introduced by

d945cb9cce20ac7143c2de8d88b187f62db99bdc

Fixed by 4291086b1f081b869c6d79e5b7441633dc3ace00
linux-armadaxp
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-ec2
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-flo
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-gke
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-goldfish
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-grouper
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-hwe
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-hwe-edge
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-linaro-omap
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-linaro-shared
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-lts-quantal
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-lts-raring
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-lts-saucy
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-lts-trusty
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-lts-utopic
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-lts-vivid
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-lts-wily
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-lts-xenial
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-maguro
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-mako
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-manta
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-mvl-dove
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-qcm-msm
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-raspi2
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-snapdragon
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)
linux-ti-omap4
Launchpad, Ubuntu, Debian
upstream
Released (3.15~rc5)