Ubuntu Security Notice 1671-1 - A flaw was discovered in the Linux kernel's handling of new hot-plugged memory. An unprivileged local user could exploit this flaw to cause a denial of service by crashing the system.
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Ubuntu Security Notice USN-1671-1
December 19, 2012
linux vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.10
Summary:
The system could be made to crash under certain conditions.
Software Description:
- linux: Linux kernel
Details:
A flaw was discovered in the Linux kernel's handling of new hot-plugged
memory. An unprivileged local user could exploit this flaw to cause a
denial of service by crashing the system.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.10:
linux-image-3.5.0-21-generic 3.5.0-21.32
linux-image-3.5.0-21-highbank 3.5.0-21.32
linux-image-3.5.0-21-omap 3.5.0-21.32
linux-image-3.5.0-21-powerpc-smp 3.5.0-21.32
linux-image-3.5.0-21-powerpc64-smp 3.5.0-21.32
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-1671-1
CVE-2012-5517
Package Information:
https://launchpad.net/ubuntu/+source/linux/3.5.0-21.32