Ubuntu: 2133-1: Linux kernel vulnerabilities
Posted by Benjamin D. Thomas   
Ubuntu Several security issues were fixed in the kernel.
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Ubuntu Security Notice USN-2133-1
March 07, 2014

linux vulnerabilities
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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: Linux kernel

Details:

Mathy Vanhoef discovered an error in the the way the ath9k driver was
handling the BSSID masking. A remote attacker could exploit this error to
discover the original MAC address after a spoofing atack. (CVE-2013-4579)

Andrew Honig reported an error in the Linux Kernel's Kernel Virtual Machine
(KVM) VAPIC synchronization operation. A local user could exploit this flaw
to gain privileges or cause a denial of service (system crash).
(CVE-2013-6368)

halfdog reported an error in the AMD K7 and K8 platform support in the
Linux kernel. An unprivileged local user could exploit this flaw on AMD
based systems to cause a denial of service (task kill) or possibly gain
privileges via a crafted application. (CVE-2014-1438)

An information leak was discovered in the Linux kernel's hamradio YAM
driver for AX.25 packet radio. A local user with the CAP_NET_ADMIN
capability could exploit this flaw to obtain sensitive information from
kernel memory. (CVE-2014-1446)

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)

Update instructions:

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

Ubuntu 12.04 LTS:
  linux-image-3.2.0-60-generic    3.2.0-60.91
  linux-image-3.2.0-60-generic-pae  3.2.0-60.91
  linux-image-3.2.0-60-highbank   3.2.0-60.91
  linux-image-3.2.0-60-omap       3.2.0-60.91
  linux-image-3.2.0-60-powerpc-smp  3.2.0-60.91
  linux-image-3.2.0-60-powerpc64-smp  3.2.0-60.91
  linux-image-3.2.0-60-virtual    3.2.0-60.91

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-2133-1
  CVE-2013-4579, CVE-2013-6368, CVE-2014-1438, CVE-2014-1446,
  CVE-2014-1874

Package Information:
  https://launchpad.net/ubuntu/+source/linux/3.2.0-60.91