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Gentoo Linux Security Advisory                           GLSA 202208-23
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                                           https://security.gentoo.org/
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 Severity: High
    Title: Xen: Multiple Vulnerabilities
     Date: August 14, 2022
     Bugs: #810341, #812485, #816882, #825354, #832039, #835401, #850802
       ID: 202208-23

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Synopsis
========

Multiple vulnerabilities have been discovered in Xen, the worst of which
could result in remote code execution (guest sandbox escape).

Background
==========

Xen is a bare-metal hypervisor.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-emulation/xen          < 4.15.3                    >= 4.15.3
  2  app-emulation/xen-tools    < 4.15.3                    >= 4.15.3

Description
===========

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

Impact
======

Please review the referenced CVE identifiers for details.

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-4.15.3"

All Xen tools users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose
 ">=app-emulation/xen-tools-4.15.3"

References
==========

[ 1 ] CVE-2021-28694
      https://nvd.nist.gov/vuln/detail/CVE-2021-28694
[ 2 ] CVE-2021-28695
      https://nvd.nist.gov/vuln/detail/CVE-2021-28695
[ 3 ] CVE-2021-28696
      https://nvd.nist.gov/vuln/detail/CVE-2021-28696
[ 4 ] CVE-2021-28697
      https://nvd.nist.gov/vuln/detail/CVE-2021-28697
[ 5 ] CVE-2021-28698
      https://nvd.nist.gov/vuln/detail/CVE-2021-28698
[ 6 ] CVE-2021-28699
      https://nvd.nist.gov/vuln/detail/CVE-2021-28699
[ 7 ] CVE-2021-28700
      https://nvd.nist.gov/vuln/detail/CVE-2021-28700
[ 8 ] CVE-2021-28701
      https://nvd.nist.gov/vuln/detail/CVE-2021-28701
[ 9 ] CVE-2021-28702
      https://nvd.nist.gov/vuln/detail/CVE-2021-28702
[ 10 ] CVE-2021-28710
      https://nvd.nist.gov/vuln/detail/CVE-2021-28710
[ 11 ] CVE-2022-21123
      https://nvd.nist.gov/vuln/detail/CVE-2022-21123
[ 12 ] CVE-2022-21125
      https://nvd.nist.gov/vuln/detail/CVE-2022-21125
[ 13 ] CVE-2022-21166
      https://nvd.nist.gov/vuln/detail/CVE-2022-21166
[ 14 ] CVE-2022-23033
      https://nvd.nist.gov/vuln/detail/CVE-2022-23033
[ 15 ] CVE-2022-23034
      https://nvd.nist.gov/vuln/detail/CVE-2022-23034
[ 16 ] CVE-2022-23035
      https://nvd.nist.gov/vuln/detail/CVE-2022-23035
[ 17 ] CVE-2022-26362
      https://nvd.nist.gov/vuln/detail/CVE-2022-26362
[ 18 ] CVE-2022-26363
      https://nvd.nist.gov/vuln/detail/CVE-2022-26363
[ 19 ] CVE-2022-26364
      https://nvd.nist.gov/vuln/detail/CVE-2022-26364
[ 20 ] XSA-378
[ 21 ] XSA-379
[ 22 ] XSA-380
[ 23 ] XSA-382
[ 24 ] XSA-383
[ 25 ] XSA-384
[ 26 ] XSA-386
[ 27 ] XSA-390
[ 28 ] XSA-401
[ 29 ] XSA-402
[ 30 ] XSA-404

Availability
============

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

 https://security.gentoo.org/glsa/202208-23

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 2022 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
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