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Ubuntu 12.04 LTS USN-2286-1 Moderate: Linux Kernel Exploits Fixed

ubuntu
Calendar Grey July 17, 2014
Scroller Ubuntu
A range of security flaws resolved in Ubuntu's linux-lts-precise kernel, mitigating possible threats and exploits.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-raring: Linux hardware enablement kernel from Raring

Details:

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)

Salva Peiró discovered an information leak in the Linux kernel's media-device driver. A local attacker could exploit this flaw to obtain sensitive

information from kernel memory. (CVE-2014-1739)

A bounds check error was discovered in the socket filter subsystem of the

Linux kernel. A local user could exploit this flaw to cause a denial of

...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory local exploit ubuntu system crash linux kernel administrative privileges

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.8.0-44-generic    3.8.0-44.66~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-2286-1

CVE-2014-0131, CVE-2014-1739, CVE-2014-3144, CVE-2014-3145,

CVE-2014-3917, CVE-2014-4014, CVE-2014-4608, CVE-2014-4943

Severity
important
Lowest
Low
Medium
High
Critical

July 17, 2014

Topics%20covered

Topics Covered

security advisory local exploit ubuntu system crash linux kernel administrative privileges

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-raring/3.8.0-44.66~precise1

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