[SECURITY] Fedora 27 Update: xen-4.9.1-4.fc27
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Fedora Update Notification
FEDORA-2017-5945560816
2017-12-19 18:22:41.465563
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Name : xen
Product : Fedora 27
Version : 4.9.1
Release : 4.fc27
URL : http://xen.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
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Update Information:
another patch related to the [XSA-240, CVE-2017-15595] issue x86 PV guests may
gain access to internally used page [XSA-248] broken x86 shadow mode refcount
overflow check [XSA-249] improper x86 shadow mode refcount error handling
[XSA-250] improper bug check in x86 log-dirty handling [XSA-251]
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References:
[ 1 ] Bug #1518656 - CVE-2017-17566 xsa248 xen: x86 PV guests may gain access to
internally used pages (XSA-248)
https://bugzilla.redhat.com/show_bug.cgi?id=1518656
[ 2 ] Bug #1518657 - CVE-2017-17563 xsa249 xen: broken x86 shadow mode refcount overflow
check (XSA-249)
https://bugzilla.redhat.com/show_bug.cgi?id=1518657
[ 3 ] Bug #1518658 - CVE-2017-17564 xsa250 xen: improper x86 shadow mode refcount error
handling (XSA-250)
https://bugzilla.redhat.com/show_bug.cgi?id=1518658
[ 4 ] Bug #1518659 - CVE-2017-17565 xsa251 xen: improper bug check in x86 log-dirty
handling (XSA-251)
https://bugzilla.redhat.com/show_bug.cgi?id=1518659
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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
http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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/keys
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