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Gentoo Linux Security Advisory                           GLSA 202009-14
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Xen: Buffer overflow
     Date: September 29, 2020
     Bugs: #738040
       ID: 202009-14

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Synopsis
=======
A buffer overflow in Xen might allow remote attacker(s) to execute
arbitrary code.

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

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-emulation/xen          < 4.13.1-r3              >= 4.13.1-r3
  2  app-emulation/xen-tools    < 4.13.1-r3              >= 4.13.1-r3
    -------------------------------------------------------------------
     2 affected packages

Description
==========
An out-of-bounds read/write access issue was found in the USB emulator
when using QEMU.

Impact
=====
A remote attacker could possibly execute arbitrary code with the
privileges of the process 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-4.13.1-r3"

All Xen tools users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot -v ">=app-emulation/xen-tools-4.13.1-r3"

References
=========
[ 1 ] CVE-2020-14364
      https://nvd.nist.gov/vuln/detail/CVE-2020-14364
[ 2 ] XSA-335
      https://xenbits.xen.org/xsa/advisory-335.html

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

 https://security.gentoo.org/glsa/202009-14

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