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CVE-2016-0723

Published: 07 February 2016

Race condition in the tty_ioctl function in drivers/tty/tty_io.c in the Linux kernel through 4.4.1 allows local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free and system crash) by making a TIOCGETD ioctl call during processing of a TIOCSETD ioctl call.

From the Ubuntu security team

It was discovered that a race condition existed in the ioctl handler for the TTY driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information.

Priority

Medium

CVSS 3 base score: 6.8

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by 5c17c861a357e9458001f021a7afa7aab9937439
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc2)