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CVE-2016-9381

Published: 23 January 2017

Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a "double fetch" vulnerability.

Notes

AuthorNote
mdeslaur
This is XSA-197

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
artful Not vulnerable
(1:2.8+dfsg-3ubuntu2)
bionic Not vulnerable
(1:2.8+dfsg-3ubuntu2)
cosmic Not vulnerable
(1:2.8+dfsg-3ubuntu2)
disco Not vulnerable
(1:2.8+dfsg-3ubuntu2)
eoan Not vulnerable
(1:2.8+dfsg-3ubuntu2)
focal Not vulnerable
(1:2.8+dfsg-3ubuntu2)
precise Does not exist

trusty
Released (2.0.0+dfsg-2ubuntu1.33)
upstream Needed

xenial
Released (1:2.5+dfsg-5ubuntu10.11)
yakkety
Released (1:2.6.1+dfsg-0ubuntu5.4)
zesty Not vulnerable
(1:2.8+dfsg-3ubuntu2)
groovy Not vulnerable
(1:2.8+dfsg-3ubuntu2)
hirsute Not vulnerable
(1:2.8+dfsg-3ubuntu2)
Patches:
upstream: http://git.qemu-project.org/?p=qemu.git;a=commit;h=b85f9dfdb156ae2a2a52f39a36e9f1f270614cd2
qemu-kvm
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

hirsute Does not exist

precise Ignored
(end of life)
trusty Does not exist

upstream Needed

xenial Does not exist

yakkety Does not exist

zesty Does not exist

groovy Does not exist

xen
Launchpad, Ubuntu, Debian
artful Not vulnerable

bionic Not vulnerable

cosmic Not vulnerable

disco Not vulnerable

eoan Not vulnerable

focal Not vulnerable

hirsute Not vulnerable

precise
Released (4.1.6.1-0ubuntu0.12.04.13)
trusty
Released (4.4.2-0ubuntu0.14.04.9)
upstream Needed

xenial Not vulnerable

yakkety Not vulnerable

zesty Not vulnerable

groovy Not vulnerable

Binaries built from this source package are in Universe and so are supported by the community.

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Local
Attack complexity High
Privileges required High
User interaction None
Scope Changed
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H