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[USN-1408-1] Linux kernel (FSL-IMX51) vulnerability

Posted on 27 March 2012
Ubuntu Security

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Ubuntu Security Notice USN-1408-1
March 27, 2012

linux-fsl-imx51 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 10.04 LTS

Summary:

The system could be made to crash under certain conditions.

Software Description:
- linux-fsl-imx51: Linux kernel for IMX51

Details:

Louis Rilling discovered a flaw in Linux kernel's clone command when
CLONE_IO is specified. An unprivileged local user could exploit this to
cause a denial of service.

Update instructions:

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

Ubuntu 10.04 LTS:
linux-image-2.6.31-612-imx51 2.6.31-612.34

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 automaticall=
y
perform this as well.

References:
http://www.ubuntu.com/usn/usn-1408-1
CVE-2012-0879

Package Information:
https://launchpad.net/ubuntu/+source/linux-fsl-imx51/2.6.31-612.34


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