[El-errata] New Ksplice updates for UEKR2 2.6.39 on OL5 and OL6 (ELSA-2020-5710)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2020-5710 can now be patched using Ksplice
CVEs: CVE-2019-19523 CVE-2019-19528 CVE-2019-19537

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2020-5710.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2020-5710.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running UEKR2 2.6.39 on
OL5 and OL6 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-2019-19523: Use-after-free when disconnecting ADU USB devices.

Logic errors when disconnecting ADU USB devices could lead to a
use-after-free. A local attacker could use this flaw to cause a
denial-of-service.

Orabug: 31240297


* CVE-2019-19537: Denial-of-service in USB character device registration.

Incorrect locking when registering and deregistering a USB character
device could result in a use-after-free and kernel crash.  A local user
with the ability to insert USB devices could use this flaw to crash the
system.

Orabug: 31317669


* CVE-2019-19528: Denial-of-service when disconnecting IO Warrior USB device.

Logic errors when disconnecting IO Warrior USB device could lead to a
use-after-free. A local attacker could use this flaw to cause a
denial-of-service.

Orabug: 31351064

SUPPORT

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