[Ksplice][EL8-Updates] New Ksplice updates for OL 8 and RHEL 8 (RHSA-2022-5819)

[Oracle Ksplice]

Synopsis: RHSA-2022-5819 can now be patched using Ksplice
CVEs: CVE-2022-1012 CVE-2022-32250

Systems running RHCK on Oracle Linux 8 and Red Hat Enterprise Linux 8
can now use Ksplice to patch against the latest Red Hat Security
Advisory, RHSA-2022-5819.

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

* Note: Oracle will not provide a zero-downtime update for CVE-2022-1012.

CVE-2022-1012 describes a flaw in the kernel's port selection algorithm
caused by using a 32-bit hashtable. This flaw might be exploited to
cause a denial-of-service or gain information about the system's port
mapping. Oracle has determined that a rebootless patch for these issues
would not be safe and recommends rebooting.


* CVE-2022-32250: Code execution in Netfilter due to use-after-free.

A flaw in nftables API of the Netfilter subsystem when removing stateful
expressions could result in a use-after-free. A local user could use
this flaw to cause a denial-of-service or execute arbitrary code.

SUPPORT

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