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Ubuntu 11.04 USN-1530-1: Kernel Flaws and Denial of Service Threats

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Calendar Grey August 10, 2012
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The Ubuntu Security Notice USN-1530-1 outlines vulnerabilities in the linux-ti-omap4 package and provides essential remediation steps.
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:

Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation.

A remote NFS server (attacker) could exploit this flaw to cause a denial of

service. (CVE-2011-4131)

Steve Grubb reported a flaw with Linux fscaps (file system base

capabilities) when used to increase the permissions of a process. For

application on which fscaps are in use a local attacker can disable address

space randomization to make attacking the process with raised privileges

easier. (CVE-2012-2123)

An error was discovered in the Linux kernel's network TUN/TAP device

implementation. A local user with access to the TUN/TAP interface (which is

not available to unprivileged users until granted by a root user) could

exploit this flaw to crash the system or potential gain administrative

privileges. (CVE-2012-2136)

Stephan Mueller reported a flaw in the Linux ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service local exploit kernel flaw ubuntu network issue file system security

Update Instructions

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

Ubuntu 11.04:
  linux-image-2.6.38-1209-omap4   2.6.38-1209.25

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

https://ubuntu.com/security/notices/USN-1530-1

CVE-2011-4131, CVE-2012-2123, CVE-2012-2136, CVE-2012-2313,

CVE-2012-2319, CVE-2012-2372, CVE-2012-2375

Severity
critical
Lowest
Low
Medium
High
Critical

August 10, 2012

Topics%20covered

Topics Covered

security advisory denial of service local exploit kernel flaw ubuntu network issue file system security

Package Information

https://launchpad.net/ubuntu/+source/linux-ti-omap4/2.6.38-1209.25

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