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[USN-1933-1] Linux kernel (OMAP4) vulnerabilities

Posted on 20 August 2013
Ubuntu Security

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Ubuntu Security Notice USN-1933-1
August 20, 2013

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

- Ubuntu 12.10

Summary:

Several security issues were fixed in the kernel.

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

Details:

Chanam Park reported a Null pointer flaw in the Linux kernel's Ceph clien=
t.
A remote attacker could exploit this flaw to cause a denial of service
(system crash). (CVE-2013-1059)

An information leak was discovered in the Linux kernel's fanotify
interface. A local user could exploit this flaw to obtain sensitive
information from kernel memory. (CVE-2013-2148)

Jonathan Salwan discovered an information leak in the Linux kernel's cdro=
m
driver. A local user can exploit this leak to obtain sensitive informatio=
n
from kernel memory if the CD-ROM drive is malfunctioning. (CVE-2013-2164)=


Kees Cook discovered a format string vulnerability in the Linux kernel's
disk block layer. A local user with administrator privileges could exploi=
t
this flaw to gain kernel privileges. (CVE-2013-2851)

Update instructions:

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

Ubuntu 12.10:
linux-image-3.5.0-231-omap4 3.5.0-231.47

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-1933-1
CVE-2013-1059, CVE-2013-2148, CVE-2013-2164, CVE-2013-2851

Package Information:
https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.5.0-231.47



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