[El-errata] New updates available via Ksplice (ELSA-2013-0223)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2013-0223 can now be patched using Ksplice
CVEs: CVE-2012-4530 CVE-2013-0190

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Security Advisory, ELSA-2013-0223.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on EL 5 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-2013-0190: stack corruption with Xen 32-bit paravirtualied guests.

Incorrect manipulation of the stack pointer in the error path for iret
failure with a 32-bit paravirtualized guest could result in stack
corruption.  This could be triggered by an unprivileged user in the
guest to cause a denial-of-service.


* 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.

SUPPORT

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