CVE-2016-7042

Published: 16 October 2016

The proc_keys_show function in security/keys/proc.c in the Linux kernel through 4.8.2, when the GNU Compiler Collection (gcc) stack protector is enabled, uses an incorrect buffer size for certain timeout data, which allows local users to cause a denial of service (stack memory corruption and panic) by reading the /proc/keys file.

From the Ubuntu security team

Ondrej Kozina discovered that the keyring interface in the Linux kernel contained a buffer overflow when displaying timeout events via the /proc/keys interface. A local attacker could use this to cause a denial of service (system crash).

Priority

Medium

CVSS 3 base score: 6.2

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by 03dab869b7b239c4e013ec82aea22e181e441cfc
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc3)