[El-errata] New Ksplice updates for Oracle Enhanced RHCK 7 (ELBA-2020-2664-1)

[Errata Announcements for Oracle Linux]

Synopsis: ELBA-2020-2664-1 can now be patched using Ksplice
CVEs: CVE-2020-0543 CVE-2020-12888

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Bug Fix Advisory, ELBA-2020-2664-1.
More information about this errata can be found at
https://linux.oracle.com/errata/ELBA-2020-2664-1.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running Oracle Enhanced
RHCK 7 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-2020-0543: Side-channel information leak using SRBDS.

A side-channel information leak on some generations of Intel processors
could allow the leaking of internal microarchitectural buffers used by
instructions like RDRAND, RDSEED and SGX EGETKEY.

Updated microcode is required for this vulnerability to be mitigated.

The status of the mitigation can be found using the following command:
$ cat /sys/devices/system/cpu/vulnerabilities/srbds


* CVE-2020-12888: Denial-of-service when accessing PCI memory through VFIO.

The VFIO PCI driver can allow users to access disabled PCI memory
regions in certain scenarios, which can lead to a system crash on
some platforms.  This flaw could be exploited by a local attacker
to cause a denial-of-service both directly from the host via a
userspace device driver, or from a guest VM that uses VFIO passthrough.

SUPPORT

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