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Alerts This Week
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Ubuntu 10.04 LTS: USN-1324-1 Critical Linux Kernel EC2 Exploits

ubuntu
Calendar Grey January 11, 2012
Scroller Ubuntu
Alert announcement USN-1325-2 highlights vulnerabilities in the Linux kernel present in Ubuntu, covering important security patches and upgrade information.
Two security issues were fixed in the kernel.

Summary

Two security issues were fixed in the kernel.

Software Description:

- linux-ec2: Linux kernel for EC2

Details:

Clement Lecigne discovered a bug in the HFS filesystem. A local attacker

could exploit this to cause a kernel oops. (CVE-2011-2203)

A flaw was found in how the Linux kernel handles user-defined key types. An

unprivileged local user could exploit this to crash the system.

(CVE-2011-4110)

Topics%20covered

Topics Covered

security advisory critical local exploit kernel ubuntu

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-2.6.32-342-ec2      2.6.32-342.43

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-1324-1

CVE-2011-2203, CVE-2011-4110

Severity
critical
Lowest
Low
Medium
High
Critical

January 11, 2012

Topics%20covered

Topics Covered

security advisory critical local exploit kernel ubuntu

Package Information

https://launchpad.net/ubuntu/+source/linux-ec2/2.6.32-342.43

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