[El-errata] New Ksplice updates for RHCK 7 (ELSA-2018-1629)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2018-1629 can now be patched using Ksplice
CVEs: CVE-2018-3639

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2018-1629.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running RHCK 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-2018-3639: Speculative Store Bypass information leak.

A hardware sidechannel with speculative stores could allow a malicious,
unprivileged user to leak the contents of privileged memory.

This update enables the speculative store bypass mitigation by default
when supported microcode is loaded and can be manually enabled/disabled
by writing 1/0 to /proc/sys/vm/ksplice_ssbd_control.  The
/proc/sys/vm/ksplice_ssbd_status file reports the current mitigation
status.

SUPPORT

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