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Ubuntu Security Notice USN-1324-1

Ubuntu Security Notice USN-1324-1
Posted Jan 11, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1324-1 - Clement Lecigne discovered a bug in the HFS filesystem. A local attacker could exploit this to cause a kernel oops. 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.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2011-2203, CVE-2011-4110
MD5 | a1449f1dd485b288467f2cc888032eb2

Ubuntu Security Notice USN-1324-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-1324-1
January 11, 2012

linux-ec2 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 10.04 LTS

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)

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:
http://www.ubuntu.com/usn/usn-1324-1
CVE-2011-2203, CVE-2011-4110

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

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