[El-errata] New Ksplice updates for UEKR6 5.4.17 on OL7 and OL8 (ELSA-2023-12825)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2023-12825 can now be patched using Ksplice
CVEs: CVE-2023-42753 CVE-2023-5090

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2023-12825.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2023-12825.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

* CVE-2023-5090: Privilege escalation from KVM guests when configuring the x2apic.

A logic error in the KVM MSR interception routine allows a KVM guest to
configure the host x2apic.  A local, unprivileged guest VM could use this
flaw to escalate privileges to that of the host hypervisor.


* CVE-2023-42753: Privilege escalation in the netfilter subsystem.

A logic error when calculating an array offset in the netfilter
subsystem could lead to an out-of-bounds access. A local attacker could
use this flaw to escalate privileges or to cause a denial-of-service.

Orabug: 35824307

SUPPORT

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