[El-errata] New Ksplice updates for UEKR6 5.4.17 on OL7 and OL8 (ELSA-2021-9420)

Errata Announcements for Oracle Linux el-errata at oss.oracle.com
Wed Aug 25 03:51:36 PDT 2021

Synopsis: ELSA-2021-9420 can now be patched using Ksplice
CVEs: CVE-2021-3653 CVE-2021-3656

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2021-9420.
More information about this errata can be found at


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


* CVE-2021-3656, CVE-2021-3653: Privilege escalation in the AMD SVM L2 guests

Multiple security bypasses potentially allow L2 guests to read/write host
physical memory.  An untrusted L1 guest running on certain AMD CPUs could
use these flaws to run with full ring zero privileges.

Orabug: 33205365


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

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