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==========================================================================
Ubuntu Security Notice USN-2140-1
March 07, 2014

linux vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.10

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

An information leak was discovered in the Linux kernel when built with the
NetFilter Connection Tracking (NF_CONNTRACK) support for IRC protocol
(NF_NAT_IRC). A remote attacker could exploit this flaw to obtain
potentially sensitive kernel information when communicating over a client-
to-client IRC connection(/dcc) via a NAT-ed network. (CVE-2014-1690)

Matthew Thode reported a denial of service vulnerability in the Linux
kernel when SELinux support is enabled. A local user with the CAP_MAC_ADMIN
capability (and the SELinux mac_admin permission if running in enforcing
mode) could exploit this flaw to cause a denial of service (kernel crash).
(CVE-2014-1874)

An information leak was discovered in the Linux kernel's NFS filesystem. A
local users with write access to an NFS share could exploit this flaw to
obtain potential sensative information from kernel memory. (CVE-2014-2038)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 13.10:
  linux-image-3.11.0-18-generic   3.11.0-18.32
  linux-image-3.11.0-18-generic-lpae  3.11.0-18.32

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References:
  http://www.ubuntu.com/usn/usn-2140-1
  CVE-2014-1690, CVE-2014-1874, CVE-2014-2038

Package Information:
  https://launchpad.net/ubuntu/+source/linux/3.11.0-18.32



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