[El-errata] New Ksplice updates for UEKR4 4.1.12 on OL6 and OL7 (ELBA-2020-5557)

[Errata Announcements for Oracle Linux]

Synopsis: ELBA-2020-5557 can now be patched using Ksplice

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Bug Fix Advisory, ELBA-2020-5557.
More information about this errata can be found at
https://linux.oracle.com/errata/ELBA-2020-5557.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running UEKR4 4.1.12 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

* Denial-of-service in XFS whiteout renames.

Incorrect locking when performing renames with RENAME_WHITEOUT set could
result in deadlock and a kernel hang.  A local, unprivileged user could
use this flaw to hang the system.

Orabug: 30902190


* Failure to join multipath RDS/TCP cluster.

A logic error when re-establishing a multipath RDS over TCP connection
could result in nodes failing to rejoin a cluster under specific
conditions.

Orabug: 30870743

SUPPORT

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