[Ksplice][EL7-Updates] New Ksplice updates for OL 7, RHEL 7, CentOS 7, and Scientific Linux 7 (RHSA-2017:0086-01)

[Oracle Ksplice]

Synopsis: RHSA-2017:0086-01 can now be patched using Ksplice
CVEs: CVE-2016-6828 CVE-2016-7117 CVE-2016-9555

Systems running RHCK on Oracle Linux 7, Red Hat Enterprise Linux 7,
CentOS 7, and Scientific Linux 7 can now use Ksplice to patch against
the latest Red Hat Security Advisory, RHSA-2017:0086-01.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running OL 7, RHEL 7,
CentOS 7, and Scientific Linux 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-2016-9555: Remote denial-of-service due to SCTP state machine memory corruption.

A missing bound-check in one of the state functions caused memory use
beyond what has been allocated. This could lead to memory corruption and
other undefined behaviors.


* CVE-2016-7117: Denial-of-service in recvmmsg() error handling.

Incorrect reference counting could result in a use-after-free in the
recvmmsg() system call.  A local, unprivileged user could use this flaw
to trigger a denial-of-service.


* CVE-2016-6828: Use after free during TCP transmission.

A logic error when a memory allocation fails during TCP transmission can
cause the kernel TCP stack to use freed memory causing a kernel panic.

SUPPORT

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