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Alerts This Week
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Ubuntu 10.04 LTS USN-1286-1 Critical Kernel Denial of Service Threats

ubuntu
Calendar Grey December 3, 2011
Scroller Ubuntu
Ubuntu 10.04 LTS addressed numerous significant kernel vulnerabilities that could result in possible system failures and security breaches.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux: Linux kernel

Details:

Vasily Averin discovered that the NFS Lock Manager (NLM) incorrectly

handled unlock requests. A local attacker could exploit this to cause a

denial of service. (CVE-2011-2491)

Robert Swiecki discovered that mapping extensions were incorrectly handled.

A local attacker could exploit this to crash the system, leading to a

denial of service. (CVE-2011-2496)

It was discovered that the wireless stack incorrectly verified SSID

lengths. A local attacker could exploit this to cause a denial of service

or gain root privileges. (CVE-2011-2517)

Ben Pfaff discovered that Classless Queuing Disciplines (qdiscs) were being

incorrectly handled. A local attacker could exploit this to crash the

system, leading to a denial of service. (CVE-2011-2525)

A bug was discovered in the XFS filesystem's handling of pathnames. A local

attacker could exploit this to crash the sy...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical exploit kernel local ubuntu

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-2.6.32-36-386       2.6.32-36.79
  linux-image-2.6.32-36-generic   2.6.32-36.79
  linux-image-2.6.32-36-generic-pae  2.6.32-36.79
  linux-image-2.6.32-36-ia64      2.6.32-36.79
  linux-image-2.6.32-36-lpia      2.6.32-36.79
  linux-image-2.6.32-36-powerpc   2.6.32-36.79
  linux-image-2.6.32-36-powerpc-smp  2.6.32-36.79
  linux-image-2.6.32-36-powerpc64-smp  2.6.32-36.79
  linux-image-2.6.32-36-preempt   2.6.32-36.79
  linux-image-2.6.32-36-server    2.6.32-36.79
  linux-image-2.6.32-36-sparc64   2.6.32-36.79
  linux-image-2.6.32-36-sparc64-smp  2.6.32-36.79
  linux-image-2.6.32-36-versatile  2.6.32-36.79
  linux-image-2.6.32-36-virtual   2.6.32-36.79

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

References

https://ubuntu.com/security/notices/USN-1286-1

CVE-2011-2491, CVE-2011-2496, CVE-2011-2517, CVE-2011-2525,

CVE-2011-4077, CVE-2011-4081, CVE-2011-4132, CVE-2011-4326,

CVE-2011-4330

Severity
critical
Lowest
Low
Medium
High
Critical

December 03, 2011

Topics%20covered

Topics Covered

security advisory denial of service critical exploit kernel local ubuntu

Package Information

https://launchpad.net/ubuntu/+source/linux/2.6.32-36.79

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