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[USN-1580-1] Linux kernel (OMAP4) vulnerabilities

Posted on 22 September 2012
Ubuntu Security

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Ubuntu Security Notice USN-1580-1
September 21, 2012

linux-ti-omap4 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.04 LTS

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 drive=
rs
that support TSO (TCP segment offload). A local or peer user could exploi=
t
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 potentiall=
y
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 12.04 LTS:
linux-image-3.2.0-1419-omap4 3.2.0-1419.26

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-1580-1
CVE-2012-3412, CVE-2012-3430

Package Information:
https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.2.0-1419.26


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