[Ksplice][EL6-Updates] New updates available via Ksplice (RHSA-2013:0223)

[Jamie Iles]

Synopsis: RHSA-2013:0223 can now be patched using Ksplice
CVEs: CVE-2012-4398 CVE-2012-4461 CVE-2012-4530

Systems running RHCK on Oracle Linux 6, Red Hat Enterprise Linux 6,
CentOS 6, and Scientific Linux 6 can now use Ksplice to patch against
the latest Red Hat Security Advisory, RHSA-2013:0223.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on OL 6, RHEL 6, CentOS
6, and Scientific Linux 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-2012-4461: Kernel panic KVM XSAVE support.

On machines without XSAVE instruction support a malicious guest can cause
a host kernel panic via the SET_SREGS ioctl.


* CVE-2012-4530: Kernel information leak in binfmt execution.

Execution of a carefully crafted sequence of scripts could allow an
unprivileged user to leak kernel stack information to userspace.


* CVE-2012-4398: Denial-of-service in kernel module loading.

A deadlock could occur in the Out of Memory (OOM) killer.  A process
could trigger this deadlock by consuming a large amount of memory, and
then causing request_module() to be called.  A local, unprivileged user
could use this flaw to cause a denial of service.

SUPPORT

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