[USN-2283-1] Linux kernel vulnerabilities

John Johansen john.johansen at canonical.com
Thu Jul 17 02:00:05 UTC 2014

Ubuntu Security Notice USN-2283-1
July 16, 2014

linux vulnerabilities

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

- Ubuntu 12.04 LTS


Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel


Sasha Levin reported a flaw in the Linux kernel's point-to-point protocol
(PPP) when used with the Layer Two Tunneling Protocol (L2TP). A local user
could exploit this flaw to gain administrative privileges. (CVE-2014-4943)

Michael S. Tsirkin discovered an information leak in the Linux kernel's
segmentation of skbs when using the zerocopy feature of vhost-net. A local
attacker could exploit this flaw to gain potentially sensitive information
from kernel memory. (CVE-2014-0131)

Don Bailey discovered a flaw in the LZO decompress algorithm used by the
Linux kernel. An attacker could exploit this flaw to cause a denial of
service (memory corruption or OOPS). (CVE-2014-4608)

Update instructions:

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

Ubuntu 12.04 LTS:
  linux-image-3.2.0-67-generic    3.2.0-67.101
  linux-image-3.2.0-67-generic-pae  3.2.0-67.101
  linux-image-3.2.0-67-highbank   3.2.0-67.101
  linux-image-3.2.0-67-omap       3.2.0-67.101
  linux-image-3.2.0-67-powerpc-smp  3.2.0-67.101
  linux-image-3.2.0-67-powerpc64-smp  3.2.0-67.101
  linux-image-3.2.0-67-virtual    3.2.0-67.101

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.

  CVE-2014-0131, CVE-2014-4608, CVE-2014-4943

Package Information:

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: OpenPGP digital signature
URL: <https://lists.ubuntu.com/archives/ubuntu-security-announce/attachments/20140716/304185b2/attachment.sig>

More information about the ubuntu-security-announce mailing list