[El-errata] New Ksplice updates for UEKR4 4.1.12 on OL6 and OL7 (ELSA-2019-4531)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2019-4531 can now be patched using Ksplice
CVEs: CVE-2017-12153 CVE-2018-17972

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2019-4531.

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-2017-12153: Denial-of-service when using cfg80211 wireless extension with GTK rekey offload.

A missing check when using GTK rekey offload, during a WoWLAN for
example, in cfg80211 wireless extension could lead to a NULL pointer
dereference. A local attacker with CAP_NET_ADMIN capability could use this
flaw to cause a denial-of-service.

Orabug: 29245533


* CVE-2018-17972: Information leak in kernel stack dumps in /proc.

A missing permissions check in the proc code could allow an unprivileged
user to access the kernel stack memory space.

Orabug: 29114879

SUPPORT

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