[El-errata] New updates available via Ksplice (ELSA-2015-3107)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2015-3107 can now be patched using Ksplice
CVEs: CVE-2015-5307 CVE-2015-8104

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Security Advisory, ELSA-2015-3107.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on EL 7 install these
updates.

On systems that have "autoinstall = yes" in /etc/uptrack/uptrack.conf,
these updates will be installed automatically and you do not need to
take any action.

Alternatively, you can install these updates by running:

# /usr/sbin/uptrack-upgrade -y


DESCRIPTION

* CVE-2015-5307: KVM host denial-of-service in alignment check.

A guest could cause a denial-of-service on a KVM host by triggering an
infinite stream of alignment check exceptions and causing the processor
microcode to enter an infinite loop.  A privileged user in a guest could
use this flaw to crash the host.


* CVE-2015-8104: KVM host denial-of-service in debug exception.

A guest could cause a denial-of-service on a KVM host by triggering a
debug exception to fire during an existing debug exception.  This could
cause the host to get trapped in an infinite loop causing a
denial-of-service.  A privileged user in a guest could use this flaw to
crash the host.

SUPPORT

Ksplice support is available at ksplice-support_ww at oracle.com.