New Ksplice updates for RHCK 9 (ELSA-2023-5069)

Synopsis: ELSA-2023-5069 can now be patched using Ksplice
CVEs: CVE-2023-20593 CVE-2023-3610

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2023-5069.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2023-5069.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running RHCK 9 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

* Improved update to CVE-2023-3610: Use-after-free in netfilter module.

A use-after-free vulnerability was found in the netfilter: nf_tables
component in the Linux kernel due to a missing error handling. A local
attacker with CAP_NET_ADMIN capability can use this flaw to get a local
privilege escalation.

* Note: Oracle will not provide a zero-downtime fix for CVE-2023-20593.

The optimal fix for this CVE on the system is a microcode update for
affected CPUs. Customers will need to upgrade the microcode on
affected CPUs in order to mitigate this vulnerability.

SUPPORT

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