[Ksplice-Fedora-25-updates] New Ksplice updates for Fedora 25 (FEDORA-2017-387ff46a66)

[Oracle Ksplice]

Synopsis: FEDORA-2017-387ff46a66 can now be patched using Ksplice
CVEs: CVE-2017-2636 CVE-2017-5669 CVE-2017-6353

Systems running Fedora 25 can now use Ksplice to patch against the
latest Fedora kernel update, FEDORA-2017-387ff46a66.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running Fedora 25
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-2017-5669: Privilege bypass when using shmat() syscall to map page zero.

A logic error when mapping a page using shmat() syscall could allow a
user to map page zero and consequently bypass a protection mechanism
that exists for the mmap() system call.


* CVE-2017-6353: Denial-of-service when peeling off a sctp socket.

A logic error when peeling off a sctp socket could lead to a double free
or a deadlock. A local user could use this flaw to cause a
denial-of-service.


* CVE-2017-2636: Privilege escalation in High Level Data Synchronous TTY line discipline.

A race condition when flushing the transmit queue concurently to sending
frames in the HDLC TTY line discipline could lead to a double free.  A
local, unprivileged user could use this flaw to elevate his privileges.

SUPPORT

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