--------------------------------------------------------------------------------Fedora Update Notification
FEDORA-2018-c553a586c8
2018-03-06 17:17:51.858344
--------------------------------------------------------------------------------Name        : xen
Product     : Fedora 27
Version     : 4.9.1
Release     : 5.fc27
URL         : https://xenproject.org/
Summary     : Xen is a virtual machine monitor
Description :
This package contains the XenD daemon and xm command line
tools, needed to manage virtual machines running under the
Xen hypervisor

--------------------------------------------------------------------------------Update Information:

add Xen page-table isolation (XPTI) mitigation and Branch Target Injection (BTI)
mitigation for XSA-254 DoS via non-preemptable L3/L4 pagetable freeing [XSA-252]
(#1549568) grant table v2 -> v1 transition may crash Xen [XSA-255] (#1549570)
x86 PVH guest without LAPIC may DoS the host [XSA-256] (#1549572)
--------------------------------------------------------------------------------References:

  [ 1 ] Bug #1544456 - CVE-2018-7540 xsa252 xen: DoS via non-preemptable L3/L4 pagetable freeing (XSA-252)
        https://bugzilla.redhat.com/show_bug.cgi?id=1544456
  [ 2 ] Bug #1544459 - CVE-2018-7541 xsa255 xen: grant table v2 -> v1 transition may crash Xen (XSA-255)
        https://bugzilla.redhat.com/show_bug.cgi?id=1544459
  [ 3 ] Bug #1544453 - CVE-2018-7542 xsa256 xen: x86 PVH guest without LAPIC may DoS the host (XSA-256)
        https://bugzilla.redhat.com/show_bug.cgi?id=1544453
--------------------------------------------------------------------------------This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade xen' at the command line.
For more information, refer to the dnf documentation available at
https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/security/
--------------------------------------------------------------------------------
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Fedora 27: xen Security Update 2018-c553a586c8 2018-c553a586c8

March 6, 2018
add Xen page-table isolation (XPTI) mitigation and Branch Target Injection (BTI) mitigation for XSA-254 DoS via non-preemptable L3/L4 pagetable freeing [XSA-252] (#1549568) grant t...

Summary

This package contains the XenD daemon and xm command line

tools, needed to manage virtual machines running under the

Xen hypervisor

add Xen page-table isolation (XPTI) mitigation and Branch Target Injection (BTI)

mitigation for XSA-254 DoS via non-preemptable L3/L4 pagetable freeing [XSA-252]

(#1549568) grant table v2 -> v1 transition may crash Xen [XSA-255] (#1549570)

x86 PVH guest without LAPIC may DoS the host [XSA-256] (#1549572)

[ 1 ] Bug #1544456 - CVE-2018-7540 xsa252 xen: DoS via non-preemptable L3/L4 pagetable freeing (XSA-252)

https://bugzilla.redhat.com/show_bug.cgi?id=1544456

[ 2 ] Bug #1544459 - CVE-2018-7541 xsa255 xen: grant table v2 -> v1 transition may crash Xen (XSA-255)

https://bugzilla.redhat.com/show_bug.cgi?id=1544459

[ 3 ] Bug #1544453 - CVE-2018-7542 xsa256 xen: x86 PVH guest without LAPIC may DoS the host (XSA-256)

https://bugzilla.redhat.com/show_bug.cgi?id=1544453

su -c 'dnf upgrade xen' at the command line.

For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

package-announce mailing list -- package-announce@lists.fedoraproject.org

To unsubscribe send an email to package-announce-leave@lists.fedoraproject.org

FEDORA-2018-c553a586c8 2018-03-06 17:17:51.858344 Product : Fedora 27 Version : 4.9.1 Release : 5.fc27 URL : https://xenproject.org/ Summary : Xen is a virtual machine monitor Description : This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor add Xen page-table isolation (XPTI) mitigation and Branch Target Injection (BTI) mitigation for XSA-254 DoS via non-preemptable L3/L4 pagetable freeing [XSA-252] (#1549568) grant table v2 -> v1 transition may crash Xen [XSA-255] (#1549570) x86 PVH guest without LAPIC may DoS the host [XSA-256] (#1549572) [ 1 ] Bug #1544456 - CVE-2018-7540 xsa252 xen: DoS via non-preemptable L3/L4 pagetable freeing (XSA-252) https://bugzilla.redhat.com/show_bug.cgi?id=1544456 [ 2 ] Bug #1544459 - CVE-2018-7541 xsa255 xen: grant table v2 -> v1 transition may crash Xen (XSA-255) https://bugzilla.redhat.com/show_bug.cgi?id=1544459 [ 3 ] Bug #1544453 - CVE-2018-7542 xsa256 xen: x86 PVH guest without LAPIC may DoS the host (XSA-256) https://bugzilla.redhat.com/show_bug.cgi?id=1544453 su -c 'dnf upgrade xen' at the command line. For more information, refer to the dnf documentation available at https://dnf.readthedocs.io/en/latest/command_ref.html All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/security/ package-announce mailing list -- package-announce@lists.fedoraproject.org To unsubscribe send an email to package-announce-leave@lists.fedoraproject.org

Change Log

References

Update Instructions

Severity
Product : Fedora 27
Version : 4.9.1
Release : 5.fc27
URL : https://xenproject.org/
Summary : Xen is a virtual machine monitor

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