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Ubuntu 12.04 LTS USN-2357-1 Critical: Linux Kernel Denial of Service

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Calendar Grey September 23, 2014
Scroller Ubuntu
Resolution for major vulnerabilities impacting the kernel in Ubuntu 12.04 LTS outlined in Security Advisory USN-2357-1.
Several security issues were fixed in the kernel.

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 mou...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical kernel ubuntu systems update linux-ti-omap4

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

https://ubuntu.com/security/notices/USN-2357-1

CVE-2014-3601, CVE-2014-5471, CVE-2014-5472

Severity
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Critical

September 23, 2014

Topics%20covered

Topics Covered

security advisory denial of service critical kernel ubuntu systems update linux-ti-omap4

Package Information

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

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