[El-errata] New Ksplice updates for UEKR6 5.4.17 on OL7 and OL8 (ELSA-2021-9457)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2021-9457 can now be patched using Ksplice
CVEs: CVE-2021-3739

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2021-9457.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2021-9457.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-2021-3739: Denial-of-service in BTRFS when removing a non-existing
device ID.

A NULL pointer dereference in BTRFS could happen when removing
a non-existing device ID and lead to a system crash. A local user with
CAP_SYS_ADMIN privileges could use this flaw for a denial-of-service.

Orabug: 33281078

SUPPORT

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