[Ksplice][RHEL6-Updates] New Ksplice updates for RHEL 6 (RHSA-2018:1638)

[Oracle Ksplice]

Synopsis: RHSA-2018:1638 can now be patched using Ksplice
CVEs: CVE-2018-3639

Systems running Red Hat Enterprise Linux 6 can now use Ksplice to
patch against the latest Red Hat Security Advisory, RHSA-2018:1638.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running RHEL 6 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.