[El-errata] New Ksplice updates for UEKR6 5.4.17 on OL7 and OL8 (ELSA-2022-9012)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2022-9012 can now be patched using Ksplice
CVEs: CVE-2021-4083 CVE-2021-4155

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2022-9012.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2022-9012.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-2021-4083: Race condition in garbage collection of BSD Unix domain sockets.

Possible race condition in BSD Unix domain sockets garbage collection
could result in a read-after-free error. A local user could use this
flaw to cause denial-of-service or privileges escalation.

Orabug: 33691332


* CVE-2021-4155: Data leak in XFS filesystem.

The XFS filesystem does not correctly initialize certain data blocks. This
could allow data leaks to unprivileged users.

Orabug: 33699625

SUPPORT

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