[El-errata] New Ksplice updates for UEKR3 3.8.13 on OL6 and OL7 (ELSA-2019-4775)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2019-4775 can now be patched using Ksplice
CVEs: CVE-2019-1125

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2019-4775.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2019-4775.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running UEKR3 3.8.13 on
OL6 and OL7 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

* Improved KAISER/KPTI enablement for Ksplice.


* CVE-2019-1125: Information leak in kernel entry code when swapping GS.

A local attacker could speculatively access percpu data using a user
defined GS and leak information about running kernel to facilitate an
attack.

Orabug: 30165288

SUPPORT

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