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Ubuntu Security Notice USN-2357-1

Ubuntu Security Notice USN-2357-1
Posted Sep 24, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2357-1 - Jack Morgenstein reported a flaw in the page handling of the KVM (Kernel Virtual Machine) subsystem in the Linux kernel. A guest OS user could exploit this flaw to cause a denial of service (host OS memory corruption) or possibly have other unspecified impact on the host OS. Chris Evans reported an flaw in the Linux kernel's handling of iso9660 (compact disk filesystem) images. An attacker who can mount a custom iso9660 image either via a CD/DVD drive or a loopback mount could cause a denial of service (system crash or reboot). Various other issues were also addressed.

tags | advisory, denial of service, kernel
systems | linux, ubuntu
advisories | CVE-2014-3601, CVE-2014-5471, CVE-2014-5472
SHA-256 | 0ebb86614e3898d4a547dc9127eb1ace7ab6fa1c8b81e79dc053df7fce2da65e

Ubuntu Security Notice USN-2357-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-2357-1
September 23, 2014

linux-ti-omap4 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-ti-omap4: Linux kernel for OMAP4

Details:

Jack Morgenstein reported a flaw in the page handling of the KVM (Kerenl
Virtual Machine) subsystem in the Linux kernel. A guest OS user could
exploit this flaw to cause a denial of service (host OS memory corruption)
or possibly have other unspecified impact on the host OS. (CVE-2014-3601)

Chris Evans reported an flaw in the Linux kernel's handling of iso9660
(compact disk filesystem) images. An attacker who can mount a custom
iso9660 image either via a CD/DVD drive or a loopback mount could cause a
denial of service (system crash or reboot). (CVE-2014-5471)

Chris Evans reported an flaw in the Linux kernel's handling of iso9660
(compact disk filesystem) images. An attacker who can mount a custom
iso9660 image, with a self-referential CL entry, either via a CD/DVD drive
or a loopback mount could cause a denial of service (unkillable mount
process). (CVE-2014-5472)

Update instructions:

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

Ubuntu 12.04 LTS:
linux-image-3.2.0-1453-omap4 3.2.0-1453.73

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-2357-1
CVE-2014-3601, CVE-2014-5471, CVE-2014-5472

Package Information:
https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.2.0-1453.73
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