[El-errata] New Ksplice updates for UEKR4 4.1.12 on OL6 and OL7 (ELSA-2019-4594)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2019-4594 can now be patched using Ksplice
CVEs: CVE-2018-10879

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2019-4594.

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-2018-10879: Use-after-free when setting extended attribute entry on ext4 filesystem.

A logic error when setting extended attribute entry on ext4 filesystem
could lead to a use-after-free. A local attacker could use this flaw
with a crafted ext4 filesystem to cause a denial-of-service.

Orabug: 29437127


* NULL pointer dereference on Xen virtual block device removal.

A missing check on Xen virtual block device removal could lead to a NULL
pointer dereference. A local attacker could use this flaw to cause a
denial-of-service.

Orabug: 29469740

SUPPORT

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