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Ubuntu 11.10 USN-1568-1 Moderate: Kernel Denial Of Service Issues

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Calendar Grey September 14, 2012
Scroller Ubuntu
Ubuntu Security Notice USN-1570-1 tackles kernel vulnerabilities with critical patches issued for Ubuntu 11.04.
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)

Topics%20covered

Topics Covered

security advisory information leak DoS Ubuntu kernel issue

Update Instructions

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

Ubuntu 11.10:
  linux-image-3.0.0-26-generic    3.0.0-26.42
  linux-image-3.0.0-26-generic-pae  3.0.0-26.42
  linux-image-3.0.0-26-omap       3.0.0-26.42
  linux-image-3.0.0-26-powerpc    3.0.0-26.42
  linux-image-3.0.0-26-powerpc-smp  3.0.0-26.42
  linux-image-3.0.0-26-powerpc64-smp  3.0.0-26.42
  linux-image-3.0.0-26-server     3.0.0-26.42
  linux-image-3.0.0-26-virtual    3.0.0-26.42

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-1568-1

CVE-2012-3412, CVE-2012-3430

September 14, 2012

Topics%20covered

Topics Covered

security advisory information leak DoS Ubuntu kernel issue

Package Information

https://launchpad.net/ubuntu/+source/linux/3.0.0-26.42

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