CVE-2015-8550
Published: 17 December 2015
Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability.
From the Ubuntu Security Team
Felix Wilhelm discovered a race condition in the Xen paravirtualized drivers which can cause double fetch vulnerabilities. An attacker in the paravirtualized guest could exploit this flaw to cause a denial of service (crash the host) or potentially execute arbitrary code on the host.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
precise |
Released
(3.2.0-97.137)
|
| trusty |
Released
(3.13.0-74.118)
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Released
(3.19.0-42.48)
|
|
| wily |
Released
(4.2.0-22.27)
|
|
| xenial |
Not vulnerable
(4.4.0-2.16)
|
|
| yakkety |
Not vulnerable
(4.4.0-21.37)
|
|
| zesty |
Not vulnerable
(4.8.0-22.24)
|
|
|
Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Introduced by 402b27f9f2c22309d5bb285628765bc27b82fcf5 Introduced by d9d660f6e562a47b4065eeb7e538910b0471b988 Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||
|
linux-armadaxp Launchpad, Ubuntu, Debian |
precise |
Released
(3.2.0-1661.85)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| 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
(4.4~rc6)
|
|
| xenial |
Not vulnerable
(4.4.0-1001.10)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-ec2 Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| 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
(4.4~rc6)
|
|
| vivid |
Ignored
(end of life)
|
|
| wily |
Ignored
(end of life)
|
|
| xenial |
Ignored
(abandoned)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Does not exist
|
|
|
linux-fsl-imx51 Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4~rc6)
|
|
| 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
(4.4~rc6)
|
|
| vivid |
Ignored
(end of life)
|
|
| wily |
Ignored
(end of life)
|
|
| xenial |
Ignored
(abandoned)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Ignored
(end of life)
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| 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
(4.4~rc6)
|
|
| 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
(4.4~rc6)
|
|
| 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
(end of life)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life, was needs-triage)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| 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
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life, was needs-triage)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| 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
(3.13.0-74.118~precise1)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Released
(3.16.0-57.77~14.04.1)
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Released
(3.19.0-42.48~14.04.1)
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Released
(4.2.0-22.27~14.04.1)
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Not vulnerable
(4.4.0-13.29~14.04.1)
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| 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
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| 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
(4.4~rc6)
|
|
| vivid |
Ignored
(end of life)
|
|
| wily |
Ignored
(end of life)
|
|
| xenial |
Ignored
(abandoned)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Does not exist
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Ignored
(end of life)
|
|
| wily |
Ignored
(end of life)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-mvl-dove Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| 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
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Not vulnerable
(Xen not configured)
|
|
| xenial |
Not vulnerable
(4.4.0-1003.4)
|
|
| yakkety |
Not vulnerable
(4.4.0-1009.10)
|
|
| zesty |
Not vulnerable
(4.8.0-1013.15)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4~rc6)
|
|
| wily |
Does not exist
|
|
| xenial |
Not vulnerable
(4.4.0-1012.12)
|
|
| yakkety |
Not vulnerable
(4.4.0-1012.12)
|
|
| zesty |
Not vulnerable
(4.4.0-1029.32)
|
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
precise |
Released
(3.2.0-1476.99)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4~rc6)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
qemu Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Released
(2.0.0+dfsg-2ubuntu1.22)
|
|
| upstream |
Needs triage
|
|
| vivid |
Ignored
(end of life)
|
|
| wily |
Released
(1:2.3+dfsg-5ubuntu9.2)
|
|
| xenial |
Released
(1:2.5+dfsg-1ubuntu5)
|
|
| yakkety |
Released
(1:2.5+dfsg-1ubuntu5)
|
|
| zesty |
Released
(1:2.5+dfsg-1ubuntu5)
|
|
|
Patches: upstream: http://git.qemu.org/?p=qemu.git;a=commit;h=f9e98e5d7a67367b862941e339a98b8322fa0cea upstream: http://git.qemu.org/?p=qemu.git;a=commit;h=7ea11bf376aea4bf8340eb363de9777c7f93e556 |
||
|
qemu-kvm Launchpad, Ubuntu, Debian |
precise |
Released
(1.0+noroms-0ubuntu14.27)
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
xen Launchpad, Ubuntu, Debian |
precise |
Released
(4.1.6.1-0ubuntu0.12.04.8)
|
| trusty |
Released
(4.4.2-0ubuntu0.14.04.4)
|
|
| upstream |
Needs triage
|
|
| vivid |
Released
(4.5.0-1ubuntu4.4)
|
|
| wily |
Released
(4.5.1-0ubuntu1.2)
|
|
| xenial |
Released
(4.6.0-1ubuntu2)
|
|
| yakkety |
Released
(4.6.0-1ubuntu2)
|
|
| zesty |
Released
(4.6.0-1ubuntu2)
|
|
| Binaries built from this source package are in Universe and so are supported by the community. | ||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.2 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | High |
| User interaction | None |
| Scope | Changed |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
References
- http://xenbits.xen.org/xsa/advisory-155.html
- https://ubuntu.com/security/notices/USN-2846-1
- https://ubuntu.com/security/notices/USN-2847-1
- https://ubuntu.com/security/notices/USN-2848-1
- https://ubuntu.com/security/notices/USN-2849-1
- https://ubuntu.com/security/notices/USN-2850-1
- https://ubuntu.com/security/notices/USN-2851-1
- https://ubuntu.com/security/notices/USN-2853-1
- https://ubuntu.com/security/notices/USN-2854-1
- https://ubuntu.com/security/notices/USN-2886-2
- https://ubuntu.com/security/notices/USN-2891-1
- https://www.cve.org/CVERecord?id=CVE-2015-8550
- NVD
- Launchpad
- Debian