[Ksplice][Ubuntu-14.10-Updates] New updates available via Ksplice (USN-2396-1)

[Oracle Ksplice]

Synopsis: USN-2396-1 can now be patched using Ksplice
CVEs: CVE-2014-3611 CVE-2014-3646 CVE-2014-3647

Systems running Ubuntu 14.10 Utopic can now use Ksplice to patch
against the latest Ubuntu Security Notice, USN-2396-1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on Ubuntu 14.10 Utopic
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-2014-3611: Denial-of-service in KVM emulated programmable interval timer.

Incorrect locking in the KVM emulated programmable interval timer (PIT)
could crash the host kernel under specific conditions. A local attacker
could use this flaw to cause a denial-of-service in the host KVM.


* CVE-2014-3646: KVM guest denial-of-service when using invvpid opcode.

The KVM host emulator does not gracefully handle a KVM guest using the
invvpid opcode, causing a guest VM exit without proper error codes being
propagated to userspace. A local, unprivileged guest user could use this
flaw to crash a KVM guest VM and cause a denial-of-service.


* CVE-2014-3647: Denial-of-service in guest KVM when changing RIP to non-canonical address.

A flaw in the KVM emulator mishandles non-canonical addresses when
emulating instructions which change the instruction pointer, potentially
causing a failed VM-entry. A privileged guest user could use this flaw to
cause a denial-of-service in the guest.

SUPPORT

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