[Ksplice][Ubuntu-17.10-Updates] New Ksplice updates for Ubuntu 17.10 Artful (USN-3653-1)

[Oracle Ksplice]

Synopsis: USN-3653-1 can now be patched using Ksplice
CVEs: CVE-2017-17449 CVE-2017-17975 CVE-2017-18203 CVE-2017-18208 CVE-2018-3639 CVE-2018-8822

Systems running Ubuntu 17.10 Artful can now use Ksplice to patch
against the latest Ubuntu Security Notice, USN-3653-1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running Ubuntu 17.10
Artful 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-2017-17975: Double-free when registering USBTV007 video driver.

A logic error in error path when registering USBTV007 video driver could
lead to a double-free. A local attacker could use this flaw to cause a
denial-of-service.


* CVE-2017-17449: Missing permission check in netlink monitoring.

Netlink monitoring is not correctly restricted to the local namespace.
Nlmon can currently be used to sniff packets on the entire system.


* CVE-2017-18203: Denial-of-service during device mapper destruction.

A race condition between creation and destruction of device mapper
objects can result in an assertion failure, leading to a kernel crash. A
local user could use this flaw to cause a denial-of-service.


* CVE-2018-8822: Denial-of-service in NCP filesystem server during mmap.

A failure to verify bounds in the NCP filesystem on the server side
could lead to memory corruption and a kernel panic.  This could be
exploited to cause a denial-of-service.


* CVE-2017-18208: Denial-of-service when using madvise system call.

A logic error when using madvise system call with WILLNEED option on a
Direct Access filesystem could lead to a deadlock. A local attacker
could use this flaw to cause a denial-of-service.


* KPTI enablement for Ksplice.




* CVE-2018-3639: Speculative Store Bypass information leak.

A hardware sidechannel with speculative stores could allow a malicious,
unprivileged user to leak the contents of privileged memory.

This update enables the speculative store bypass mitigation by default
when supported microcode is loaded and can be manually enabled/disabled
by writing 1/0 to /proc/sys/vm/ksplice_ssbd_control.  The
/proc/sys/vm/ksplice_ssbd_status file reports the current mitigation
status.

SUPPORT

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