[El-errata] New updates available via Ksplice (ELSA-2013-2589)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2013-2589 can now be patched using Ksplice
CVEs: CVE-2013-2141 CVE-2013-4470 CVE-2013-6367

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Security Advisory, ELSA-2013-2589.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on EL 6 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-2013-6367: Divide-by-zero in KVM LAPIC.

A divide-by-zero flaw was found in the apic_get_tmcct() function in KVM's
Local Advanced Programmable Interrupt Controller (LAPIC) implementation.
A privileged guest user could use this flaw to crash the host.


* CVE-2013-4470: Memory corruption in IPv4 and IPv6 networking corking with UFO.

The kernel IP stack does not correctly handle sending fragmented packets via a
device which has UDP Fragmentation Offload enabled leading to memory corruption
and a kernel panic.


* CVE-2013-2141: Information leak in tkill() and tgkill() system calls.

Due to a lack of proper initialisation, the tkill() and tgkill() system
calls may leak data from the kernel stack to an unprivileged local user.

SUPPORT

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