CVE-2016-9756

Published: 28 December 2016

arch/x86/kvm/emulate.c in the Linux kernel before 4.8.12 does not properly initialize Code Segment (CS) in certain error cases, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.

From the Ubuntu security team

Dmitry Vyukov discovered that the KVM implementation in the Linux kernel did not properly initialize the Code Segment (CS) in certain error cases. A local attacker could use this to expose sensitive information (kernel memory).

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
Patches:
Introduced by d1442d85cc30ea75f7d399474ca738e0bc96f715
Fixed by 2117d5398c81554fbf803f5fd1dc55eb78216c0c
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc7)