[El-errata] New Ksplice updates for OL 8 and RHEL 8 (ELSA-2023-0832)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2023-0832 can now be patched using Ksplice
CVEs: CVE-2022-2873 CVE-2022-41222 CVE-2022-43945

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-2023-0832.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2023-0832.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-2022-43945: Out-of-bounds memory access in NFSD.

A logic error in NFSD when a small RPC Call message arrives in an
oversized RPC record can lead to a buffer overflow. A remote attacker
could use this flaw for a denial-of-service or privilege escalation.


* CVE-2022-2873: Out-of-bounds memory access in iSMT.

A missing sanity check for a user controlled value in the Intel's iSMT
SMBus host controller driver when processing an SMBus command may lead
to a memory corruption by writing past the end of a buffer. A local
user could use this flaw for denial-of-service or code execution.


* CVE-2022-41222: Use-after-free in MMU-based Paged Memory Management 
Support.

A race condition flaw in MMU-based Paged Memory Management Support due
to improper locking could result in use-after-free when moving page
tables. A local user could use this flaw for denial-of-service or code
execution.

SUPPORT

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