[El-errata] New Ksplice updates for UEKR4 4.1.12 on OL6 and OL7 (ELSA-2019-4870)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2019-4870 can now be patched using Ksplice
CVEs: CVE-2019-15219

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2019-4870.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2019-4870.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running UEKR4 4.1.12 on
OL6 and OL7 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-2019-15219: Denial-of-service in USB 2.0 SVGA dongle driver when using a malicious USB device.

A logic error in USB 2.0 SVGA dongle driver could lead to a NULL pointer
deference. A local attacker could use this flaw and a malicious USB
device to cause a denial-of-service.

Orabug: 30548565


* Kernel hang in block layer during CPU hotplug.

Excessive warning logging in the block layer could result in a flood of
kernel messages and deadlock during CPU hotplug under specific
conditions.

Orabug: 30273956


* Reduced throughput in loopback disk devices.

Failure to set the maximum number of hardware sectors on a loopback
device could result in excessive operation fragmentation and suboptimal
performance on some backing devices.

Orabug: 30244514

SUPPORT

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