Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 542
Alerts This Week
Warning Icon 1 542

Ubuntu 10.04 LTS USN-1572-1 Moderate Kernel Denial Of Service

ubuntu
Calendar Grey September 19, 2012
Scroller Ubuntu
Multiple vulnerabilities addressed in the Ubuntu kernel, impacting local machine integrity and presenting possible denial of service scenarios.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux: Linux kernel

Details:

Ben Hutchings reported a flaw in the Linux kernel with some network drivers

that support TSO (TCP segment offload). A local or peer user could exploit

this flaw to to cause a denial of service. (CVE-2012-3412)

Jay Fenlason and Doug Ledford discovered a bug in the Linux kernel

implementation of RDS sockets. A local unprivileged user could potentially

use this flaw to read privileged information from the kernel.

(CVE-2012-3430)

A flaw was discovered in the madvise feature of the Linux kernel's memory

subsystem. An unprivileged local use could exploit the flaw to cause a

denial of service (crash the system). (CVE-2012-3511)

Topics%20covered

Topics Covered

security advisory moderate denial of service kernel ubuntu system issues

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-2.6.32-43-386       2.6.32-43.97
  linux-image-2.6.32-43-generic   2.6.32-43.97
  linux-image-2.6.32-43-generic-pae  2.6.32-43.97
  linux-image-2.6.32-43-ia64      2.6.32-43.97
  linux-image-2.6.32-43-lpia      2.6.32-43.97
  linux-image-2.6.32-43-powerpc   2.6.32-43.97
  linux-image-2.6.32-43-powerpc-smp  2.6.32-43.97
  linux-image-2.6.32-43-powerpc64-smp  2.6.32-43.97
  linux-image-2.6.32-43-preempt   2.6.32-43.97
  linux-image-2.6.32-43-server    2.6.32-43.97
  linux-image-2.6.32-43-sparc64   2.6.32-43.97
  linux-image-2.6.32-43-sparc64-smp  2.6.32-43.97
  linux-image-2.6.32-43-versatile  2.6.32-43.97
  linux-image-2.6.32-43-virtual   2.6.32-43.97

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-1572-1

CVE-2012-3412, CVE-2012-3430, CVE-2012-3511

Severity
important
Lowest
Low
Medium
High
Critical

September 19, 2012

Topics%20covered

Topics Covered

security advisory moderate denial of service kernel ubuntu system issues

Package Information

https://launchpad.net/ubuntu/+source/linux/2.6.32-43.97

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.