[El-errata] New Ksplice updates for UEKR7 5.15.0 on OL8 and OL9 (ELBA-2023-12950)

[Errata Announcements for Oracle Linux]

Synopsis: ELBA-2023-12950 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-2023-12950.
More information about this errata can be found at
https://linux.oracle.com/errata/ELBA-2023-12950.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running UEKR7 5.15.0 on
OL8 and OL9 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

* Add possibility to disable usage of io_uring subsystem.

io_uring subsystem has many security issues with some of it being
impossible to live patch. Thus, Oracle decided to add a way for customer
not using io_uring to disable it for unprivileged user by using
/proc/sys/kernel/io_uring_disabled knob.

Note that io_uring is disabled by default for unprivileged users.

Orabug: 35828593

SUPPORT

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