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Ubuntu Security Notice USN-1653-1

Ubuntu Security Notice USN-1653-1
Posted Dec 4, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1653-1 - Rodrigo Freire discovered a flaw in the Linux kernel's TCP illinois congestion control algorithm. A local attacker could use this to cause a denial of service.

tags | advisory, denial of service, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2012-4565
SHA-256 | 25dbc32f4481135cb784c26cf3323fd9be5f2611d4444404eaf7b8702ea2e461

Ubuntu Security Notice USN-1653-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1653-1
December 04, 2012

linux-ec2 vulnerability
============================================================================

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

- Ubuntu 10.04 LTS

Summary:

The system could be made to run programs as an administrator.

Software Description:
- linux-ec2: Linux kernel for EC2

Details:

Rodrigo Freire discovered a flaw in the Linux kernel's TCP illinois
congestion control algorithm. A local attacker could use 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-2.6.32-350-ec2 2.6.32-350.57

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-1653-1
CVE-2012-4565

Package Information:
https://launchpad.net/ubuntu/+source/linux-ec2/2.6.32-350.57
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