[Ksplice][EL8-Updates] New Ksplice updates for OL 8 and RHEL 8 (ELSA-2021-5227)

[Oracle Ksplice]

Synopsis: ELSA-2021-5227 can now be patched using Ksplice
CVEs: CVE-2021-20321

Systems running RHCK on Oracle Linux 8 and Red Hat Enterprise Linux 8
can now use Ksplice to patch against the latest Red Hat kernel update,
ELSA-2021-5227.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2021-5227.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running OL 8 and RHEL 8
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-2021-20321: Race condition in OverlayFS.

A possible race condition exists in overlayfs that may be triggered
when a user renames a file.  A local user could use this flaw to cause
a denial-of-service.

SUPPORT

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