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Gentoo Linux Security Advisory                           GLSA 202003-56
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                                           https://security.gentoo.org/
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 Severity: High
    Title: Xen: Multiple vulnerabilities
     Date: March 25, 2020
     Bugs: #686024, #699048, #699996, #702644
       ID: 202003-56

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Synopsis
=======
Multiple vulnerabilities have been found in Xen, the worst of which
could allow for privilege escalation.

Background
=========
Xen is a bare-metal hypervisor.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-emulation/xen          < 4.12.0-r1              >= 4.12.0-r1
  2  app-emulation/xen-tools    < 4.12.0-r1              >= 4.12.0-r1
    -------------------------------------------------------------------
     2 affected packages

Description
==========
Multiple vulnerabilities have been discovered in Xen. Please review the
referenced CVE identifiers for details.

Impact
=====
A local attacker could potentially gain privileges on the host system
or cause a Denial of Service condition.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All Xen users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-emulation/xen-4.12.0-r1"

References
=========
[  1 ] CVE-2018-12126
       https://nvd.nist.gov/vuln/detail/CVE-2018-12126
[  2 ] CVE-2018-12127
       https://nvd.nist.gov/vuln/detail/CVE-2018-12127
[  3 ] CVE-2018-12130
       https://nvd.nist.gov/vuln/detail/CVE-2018-12130
[  4 ] CVE-2018-12207
       https://nvd.nist.gov/vuln/detail/CVE-2018-12207
[  5 ] CVE-2018-12207
       https://nvd.nist.gov/vuln/detail/CVE-2018-12207
[  6 ] CVE-2019-11091
       https://nvd.nist.gov/vuln/detail/CVE-2019-11091
[  7 ] CVE-2019-11135
       https://nvd.nist.gov/vuln/detail/CVE-2019-11135
[  8 ] CVE-2019-18420
       https://nvd.nist.gov/vuln/detail/CVE-2019-18420
[  9 ] CVE-2019-18421
       https://nvd.nist.gov/vuln/detail/CVE-2019-18421
[ 10 ] CVE-2019-18423
       https://nvd.nist.gov/vuln/detail/CVE-2019-18423
[ 11 ] CVE-2019-18424
       https://nvd.nist.gov/vuln/detail/CVE-2019-18424
[ 12 ] CVE-2019-18425
       https://nvd.nist.gov/vuln/detail/CVE-2019-18425
[ 13 ] CVE-2019-19577
       https://nvd.nist.gov/vuln/detail/CVE-2019-19577
[ 14 ] CVE-2019-19578
       https://nvd.nist.gov/vuln/detail/CVE-2019-19578
[ 15 ] CVE-2019-19580
       https://nvd.nist.gov/vuln/detail/CVE-2019-19580
[ 16 ] CVE-2019-19581
       https://nvd.nist.gov/vuln/detail/CVE-2019-19581
[ 17 ] CVE-2019-19582
       https://nvd.nist.gov/vuln/detail/CVE-2019-19582
[ 18 ] CVE-2019-19583
       https://nvd.nist.gov/vuln/detail/CVE-2019-19583

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202003-56

Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
======
Copyright 2020 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5/