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).
Notes
Author | Note |
---|---|
jdstrand | android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.10 and earlier preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support |
Priority
Status
Package | Release | Status |
---|---|---|
linux Launchpad, Ubuntu, Debian |
precise |
Released
(3.2.0-120.163)
|
trusty |
Released
(3.13.0-107.154)
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Released
(4.4.0-59.80)
|
|
yakkety |
Released
(4.8.0-34.36)
|
|
zesty |
Not vulnerable
(4.9.0-11.12)
|
|
Patches: Introduced by d1442d85cc30ea75f7d399474ca738e0bc96f715 |
||
linux-armadaxp Launchpad, Ubuntu, Debian |
precise |
Released
(3.2.0-1681.108)
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-aws Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Not vulnerable
(4.4.0-1002.2)
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Released
(4.4.0-1003.12)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-flo Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Not vulnerable
|
|
yakkety |
Not vulnerable
|
|
zesty |
Does not exist
|
|
linux-gke Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Not vulnerable
(4.4.0-1003.3)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Not vulnerable
|
|
yakkety |
Not vulnerable
|
|
zesty |
Not vulnerable
|
|
linux-grouper Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-hwe Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
precise |
Ignored
(abandoned)
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
precise |
Ignored
(abandoned)
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
precise |
Ignored
(abandoned)
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
precise |
Ignored
(end-of-life)
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-raring Launchpad, Ubuntu, Debian |
precise |
Ignored
(end-of-life)
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
precise |
Ignored
(end-of-life)
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-trusty Launchpad, Ubuntu, Debian |
precise |
Released
(3.13.0-107.154~precise1)
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored [out of standard support])
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was released [3.19.0-79.87~14.04.1])
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored [out of standard support])
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Released
(4.4.0-59.80~14.04.1)
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-maguro Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-mako Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Not vulnerable
|
|
yakkety |
Not vulnerable
|
|
zesty |
Does not exist
|
|
linux-manta Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
precise |
Ignored
(abandoned)
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Not vulnerable
(x86 only)
|
|
yakkety |
Not vulnerable
(x86 only)
|
|
zesty |
Not vulnerable
(4.8.0-1024.27)
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Not vulnerable
(x86 only)
|
|
yakkety |
Not vulnerable
(x86 only)
|
|
zesty |
Not vulnerable
(4.4.0-1046.50)
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
precise |
Released
(3.2.0-1498.125)
|
trusty |
Does not exist
|
|
upstream |
Released
(4.9~rc7)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.5 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9756
- https://bugzilla.redhat.com/show_bug.cgi?id=1400468
- https://ubuntu.com/security/notices/USN-3167-1
- https://ubuntu.com/security/notices/USN-3167-2
- https://ubuntu.com/security/notices/USN-3168-1
- https://ubuntu.com/security/notices/USN-3168-2
- https://ubuntu.com/security/notices/USN-3169-1
- https://ubuntu.com/security/notices/USN-3169-2
- https://ubuntu.com/security/notices/USN-3170-1
- NVD
- Launchpad
- Debian