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Ubuntu Security Notice USN-2114-1

Ubuntu Security Notice USN-2114-1
Posted Feb 19, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2114-1 - Vasily Kulikov reported a flaw in the Linux kernel's implementation of ptrace. An unprivileged local user could exploit this flaw to obtain sensitive information from kernel memory. A flaw in the handling of memory regions of the kernel virtual machine (KVM) subsystem was discovered. A local user with the ability to assign a device could exploit this flaw to cause a denial of service (memory consumption). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2013-2929, CVE-2013-4592, CVE-2013-6378, CVE-2013-6380, CVE-2013-2929, CVE-2013-4592, CVE-2013-6378, CVE-2013-6380
SHA-256 | 3dd96bdcecedff36b66200fc61b8191fc4d74d8115ff7d0cdf1cdd21795ceabf

Ubuntu Security Notice USN-2114-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-2114-1
February 18, 2014

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

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

- Ubuntu 12.10

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

Vasily Kulikov reported a flaw in the Linux kernel's implementation of
ptrace. An unprivileged local user could exploit this flaw to obtain
sensitive information from kernel memory. (CVE-2013-2929)

A flaw in the handling of memory regions of the kernel virtual machine
(KVM) subsystem was discovered. A local user with the ability to assign a
device could exploit this flaw to cause a denial of service (memory
consumption). (CVE-2013-4592)

Nico Golde and Fabian Yamaguchi reported a flaw in the Linux kernel's
debugfs filesystem. An administrative local user could exploit this flaw to
cause a denial of service (OOPS). (CVE-2013-6378)

Nico Golde and Fabian Yamaguchi reported a flaw in the driver for Adaptec
AACRAID scsi raid devices in the Linux kernel. A local user could use this
flaw to cause a denial of service or possibly other unspecified impact.
(CVE-2013-6380)

Update instructions:

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

Ubuntu 12.10:
linux-image-3.5.0-46-generic 3.5.0-46.70
linux-image-3.5.0-46-highbank 3.5.0-46.70
linux-image-3.5.0-46-omap 3.5.0-46.70
linux-image-3.5.0-46-powerpc-smp 3.5.0-46.70
linux-image-3.5.0-46-powerpc64-smp 3.5.0-46.70

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-2114-1
CVE-2013-2929, CVE-2013-4592, CVE-2013-6378, CVE-2013-6380

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.5.0-46.70
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