El-errata: New Ksplice updates for RHCK 9 (ELSA-2023-1470)

Synopsis: ELSA-2023-1470 can now be patched using Ksplice
CVEs: CVE-2022-4269 CVE-2022-4744 CVE-2023-0266

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2023-1470.
More information about this errata can be found at
  https://linux.oracle.com/errata/ELSA-2023-1470.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

* CVE-2023-0266: Use-after-free in ALSA PCM IOCTL processing.

Missing locks around certain operations can lead to a use-after-free
in the ALSA PCM driver. This flaw could by exploited by a local
attacker to escalate their privileges.

* CVE-2022-4269: Denial-of-service in Traffic Control subsystem.

A flaw in the Traffic Control subsystem when the transport protocol in
use (TCP or SCTP) does a retransmission could result in a deadlock.
A local unprivileged user could use this flaw for denial-of-service.

* CVE-2022-4744: Privilege escalation in TUN/TAP device driver.

A flaw in the TUN/TAP device driver when freing a device could result in
a double-free. A local user could use this flaw for denial-of-service or
privilege escalation.

SUPPORT

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



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