[El-errata] New Ksplice updates for UEKR2 2.6.39 on OL5 and OL6 (ELSA-2020-5512)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2020-5512 can now be patched using Ksplice
CVEs: CVE-2019-1125 CVE-2019-15807

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2020-5512.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2020-5512.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running UEKR2 2.6.39 on
OL5 and OL6 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-2019-15807: Denial-of-service when discovering expander in SAS Domain
Transport Attributes fails.

A logic error when discovering expander in SAS Domain Transport
Attributes fails could lead to a kernel assert. A local attacker could
use this flaw to cause a denial-of-service.

Orabug: 30580689


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

The original CVE-2019-1125 did not correctly handle late microcode
updates resulting in a missing mitigation if the microcode was loaded
after boot time.

Orabug: 30379640

SUPPORT

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