Exploit the possiblities

Ubuntu Security Notice USN-2239-1

Ubuntu Security Notice USN-2239-1
Posted Jun 6, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2239-1 - Pinkie Pie discovered a flaw in the Linux kernel's futex subsystem. An unprivileged local user could exploit this flaw to cause a denial of service (system crash) or gain administrative privileges. A flaw was discovered in the Linux kernel virtual machine's (kvm) validation of interrupt requests (irq). A guest OS user could exploit this flaw to cause a denial of service (host OS crash). An information leak was discovered in the netfilter subsystem of the Linux kernel. An attacker could exploit this flaw to obtain sensitive information from kernel memory. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2014-0155, CVE-2014-2568, CVE-2014-3122, CVE-2014-3153
MD5 | 66130094ea1d11aa37522e9edade2bf2

Ubuntu Security Notice USN-2239-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-2239-1
June 05, 2014

linux-lts-saucy vulnerabilities
============================================================================

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

- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux-lts-saucy: Linux hardware enablement kernel from Saucy

Details:

Pinkie Pie discovered a flaw in the Linux kernel's futex subsystem. An
unprivileged local user could exploit this flaw to cause a denial of
service (system crash) or gain administrative privileges. (CVE-2014-3153)

A flaw was discovered in the Linux kernel virtual machine's (kvm)
validation of interrupt requests (irq). A guest OS user could exploit this
flaw to cause a denial of service (host OS crash). (CVE-2014-0155)

An information leak was discovered in the netfilter subsystem of the Linux
kernel. An attacker could exploit this flaw to obtain sensitive information
from kernel memory. (CVE-2014-2568)

Sasha Levin reported a bug in the Linux kernel's virtual memory management
subsystem. An unprivileged local user could exploit this flaw to cause a
denial of service (system crash). (CVE-2014-3122)

Update instructions:

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

Ubuntu 12.04 LTS:
linux-image-3.11.0-23-generic 3.11.0-23.40~precise1
linux-image-3.11.0-23-generic-lpae 3.11.0-23.40~precise1

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-2239-1
CVE-2014-0155, CVE-2014-2568, CVE-2014-3122, CVE-2014-3153

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-saucy/3.11.0-23.40~precise1

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