[Trisquel-security] [USN-1811-1] Linux kernel (OMAP4) vulnerabilities

[John Johansen]

==========================================================================
Ubuntu Security Notice USN-1811-1
May 01, 2013

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

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:

Mathias Krause discovered an information leak in the Linux kernel's UDF
file system implementation. A local user could exploit this flaw to examine
some of the kernel's heap memory. (CVE-2012-6548)

Mathias Krause discovered an information leak in the Linux kernel's ISO
9660 CDROM file system driver. A local user could exploit this flaw to
examine some of the kernel's heap memory. (CVE-2012-6549)

An integer overflow was discovered in the Direct Rendering Manager (DRM)
subsystem for the i915 video driver in the Linux kernel. A local user could
exploit this flaw to cause a denial of service (crash) or potentially
escalate privileges. (CVE-2013-0913)

A format-string bug was discovered in the Linux kernel's ext3 filesystem
driver. A local user could exploit this flaw to possibly escalate
privileges on the system. (CVE-2013-1848)

A buffer overflow was discovered in the Linux Kernel's USB subsystem for
devices reporting the cdc-wdm class. A specially crafted USB device when
plugged-in could cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2013-1860)

An information leak in the Linux kernel's dcb netlink interface was
discovered. A local user could obtain sensitive information by examining
kernel stack memory. (CVE-2013-2634)

A kernel stack information leak was discovered in the RTNETLINK component
of the Linux kernel. A local user could read sensitive information from the
kernel stack. (CVE-2013-2635)

Update instructions:

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

Ubuntu 12.04 LTS:
  linux-image-3.2.0-1430-omap4    3.2.0-1430.39

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-1811-1
  CVE-2012-6548, CVE-2012-6549, CVE-2013-0913, CVE-2013-1848,
  CVE-2013-1860, CVE-2013-2634, CVE-2013-2635

Package Information:
  https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.2.0-1430.39

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