[Ksplice][EL8-Updates] New Ksplice updates for OL 8 and RHEL 8 (ELSA-2022-1550)

[Oracle Ksplice]

Synopsis: ELSA-2022-1550 can now be patched using Ksplice
CVEs: CVE-2021-4028 CVE-2021-4034 CVE-2022-25636

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-2022-1550.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2022-1550.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-2021-4034: Privilege escalation in pkexec.

Incorrect input validation in the pkexec program (part of Polkit) allows
any local user to become root.


* CVE-2022-25636: Privilege escalation in netfilter when using flow offload.

An incorrectly allocated array when creating a netfilter rule could lead to
a heap overflow when flow offload is supported.  A local user with the
ability to craft netfilter rules could this flaw to elevate its privileges.


* CVE-2021-4028: User-after-free on in RDMA communications manager.

A logic error in RDMA communications manager code to allow an attacker to
setup a socket and cause use-after-free. A local user could use this flaw to
crash the system or possibly escalate privileges on the system.

SUPPORT

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