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Alerts This Week
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Ubuntu 12.04 LTS: USN-2223-1 Critical Kernel Issues Fixed

ubuntu
Calendar Grey May 27, 2014
Scroller Ubuntu
Numerous vulnerabilities in the kernel of Ubuntu 12.04 LTS have been resolved through an upgrade to linux-lts-quantal, mitigating possible security breaches.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-quantal: Linux hardware enablement kernel from Quantal

Details:

Matthew Daley reported an information leak in the floppy disk driver of the

Linux kernel. An unprivileged local user could exploit this flaw to obtain

potentially sensitive information from kernel memory. (CVE-2014-1738)

Matthew Daley reported a flaw in the handling of ioctl commands by the

floppy disk driver in the Linux kernel. An unprivileged local user could

exploit this flaw to gain administrative privileges if the floppy disk

module is loaded. (CVE-2014-1737)

A flaw was discovered in the Linux kernel's IPC reference counting. An

unprivileged local user could exploit this flaw to cause a denial of

service (OOM system crash). (CVE-2013-4483)

A flaw was discovered in the vhost-net subsystem of the Linux kernel. Guest

OS users could exploit this flaw to cause a denial of service (host OS

crash). (CVE-2014-...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service information leak kernel update linux-lts-quantal administrative privileges host OS crash

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.5.0-51-generic    3.5.0-51.76~precise1

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-2223-1

CVE-2013-4483, CVE-2014-0055, CVE-2014-0077, CVE-2014-0101,

CVE-2014-1737, CVE-2014-1738, CVE-2014-2309, CVE-2014-2523,

CVE-2014-2672, CVE-2014-2678, CVE-2014-2706, CVE-2014-2851,

CVE-2014-3122

Severity
critical
Lowest
Low
Medium
High
Critical

May 27, 2014

Topics%20covered

Topics Covered

security advisory denial of service information leak kernel update linux-lts-quantal administrative privileges host OS crash

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-quantal/3.5.0-51.76~precise1

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