[El-errata] New Ksplice updates for Oracle Enhanced RHCK 7 (ELBA-2019-0163-1)

[Errata Announcements for Oracle Linux]

Synopsis: ELBA-2019-0163-1 can now be patched using Ksplice
CVEs: CVE-2018-18397 CVE-2018-18559

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Bug Fix Advisory, ELBA-2019-0163-1.

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-2018-18559: Denial-of-service when binding a packet on a socket while a notification is raised.

A race condition when binding a packet on a socket while a notification
is raised on this socket could lead to a kernel assert. A local attacker
could use this flaw to cause a denial-of-service.


* CVE-2018-18397: Permission bypass when using userfaultd to write temp or hugetlb filesystem files.

Missing checks in userfaultd could let a local attacker write into
read-only files residing in a hugetlb or a temp filesystem.

SUPPORT

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