[Ksplice][Ubuntu-16.04-Updates] New Ksplice updates for Ubuntu 16.04 Xenial (USN-3641-1)

[Jamie Iles]

Synopsis: USN-3641-1 can now be patched using Ksplice
CVEs: CVE-2018-1000199 CVE-2018-1087 CVE-2018-8897

Systems running Ubuntu 16.04 Xenial can now use Ksplice to patch
against the latest Ubuntu Security Notice, USN-3641-1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running Ubuntu 16.04
Xenial 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-2018-1000199: Denial-of-service in hardware breakpoints.

Incorrect validation of a ptrace hardware breakpoint could result in
corrupted kernel state.  A local, unprivileged user could use this flaw
to crash the system or potentially, escalate privileges.


* CVE-2018-1087: KVM guest breakpoint privilege escalation.

Incorrect breakpoint emulation for a KVM guest could allow a local,
unprivileged user to escalate privileges inside the guest.


* CVE-2018-8897: Denial-of-service in KVM breakpoint handling.

Incorrect stack management of data watchpoints and breakpoints could
allow an unprivileged user to crash the system.

SUPPORT

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