[Ksplice][Ubuntu-12.10-Updates] New updates available via Ksplice (USN-1646-1)

[Samson Yeung]

Synopsis: USN-1646-1 can now be patched using Ksplice
CVEs: CVE-2012-0957 CVE-2012-4565

Systems running Ubuntu 12.10 Quantal can now use Ksplice to patch
against the latest Ubuntu Security Notice, USN-1646-1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on Ubuntu 12.10 Quantal
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-2012-4565: Divide by zero in TCP congestion control Algorithm.

The TCP Illinois congestion control algorithm does not correctly handle a
zero number of RTTs when reading TCP stats, leading to a divide-by-zero
and kernel panic. A remote attacker could potentially use this flaw to
cause a remote denial of service.


* CVE-2012-0957: Information leak in uname syscall.

A process running under a UNAME26 personality can disclose the contents
of kernel memory via the uname syscall.

SUPPORT

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