[El-errata] New updates available via Ksplice (ELSA-2015-3047)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2015-3047 can now be patched using Ksplice
CVEs: CVE-2015-1593 CVE-2015-2830

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Security Advisory, ELSA-2015-3047.

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-2015-1593: Stack layout randomization entropy reduction.

A flaw in the the stack base randomization code could result in a
reduction of entropy by a factor of four.  An attacker could use this
flaw to reduce the amount of work needed to bypass ASLR.


* CVE-2015-2830: mis-handling of int80 fork from 64bits application.

A flaw in the ret_from_fork assembly stub does not prevent the TS_COMPAT
flag from reaching a user-mode task.  An attacker could potentially use
this flaw to bypass the seccomp or audit protections via a crafted
application.

SUPPORT

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