[El-errata] New Ksplice updates for UEKR6 5.4.17 on OL7 and OL8 (ELSA-2020-5792)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2020-5792 can now be patched using Ksplice
CVEs: CVE-2020-15780

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2020-5792.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2020-5792.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running UEKR6 5.4.17 on
OL7 and OL8 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

* Race condition when sending IB subnet MAD causes denial-of-service.

When allocating an Infiniband management diagram packet for the
Infiniband subnet manager, the request data might be freed before the
diagram is fully transmitted, resulting in a use-after-free and
denial-of-service.

Orabug: 31631527


* CVE-2020-15780: SecureBoot bypass through ACPI table loading.

A missing check that the kernel is not locked down when loading ACPI tables
from userspace can allow the root user to escape SecureBoot or a kernel
lock down.

Orabug: 31642981

SUPPORT

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