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Ubuntu Security Notice USN-1578-1

Ubuntu Security Notice USN-1578-1
Posted Sep 22, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1578-1 - Ben Hutchings reported a flaw in the Linux kernel with some network drivers that support TSO (TCP segment offload). A local or peer user could exploit this flaw to to cause a denial of service. Jay Fenlason and Doug Ledford discovered a bug in the Linux kernel implementation of RDS sockets. A local unprivileged user could potentially use this flaw to read privileged information from the kernel. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2012-3412, CVE-2012-3430, CVE-2012-3412, CVE-2012-3430
SHA-256 | f0f7a7c1a6c756f92e5c2b0f4328a2c2eec5e4bbe0365789fbce13a54a10de39

Ubuntu Security Notice USN-1578-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1578-1
September 21, 2012

linux-ti-omap4 vulnerabilities
============================================================================

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

- Ubuntu 11.10

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux-ti-omap4: Linux kernel for OMAP4

Details:

Ben Hutchings reported a flaw in the Linux kernel with some network drivers
that support TSO (TCP segment offload). A local or peer user could exploit
this flaw to to cause a denial of service. (CVE-2012-3412)

Jay Fenlason and Doug Ledford discovered a bug in the Linux kernel
implementation of RDS sockets. A local unprivileged user could potentially
use this flaw to read privileged information from the kernel.
(CVE-2012-3430)

Update instructions:

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

Ubuntu 11.10:
linux-image-3.0.0-1216-omap4 3.0.0-1216.28

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-1578-1
CVE-2012-3412, CVE-2012-3430

Package Information:
https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.0.0-1216.28
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