Ubuntu: 1839-1: Linux kernel (OMAP4) vulnerabilities
Posted by Benjamin D. Thomas   
Ubuntu Several security issues were fixed in the kernel.
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Ubuntu Security Notice USN-1839-1
May 28, 2013

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:

A flaw was discovered in the Linux kernel's perf_events interface. A local
user could exploit this flaw to escalate privileges on the system.
(CVE-2013-2094)

Andy Lutomirski discover an error in the Linux kernel's credential handling
on unix sockets. A local user could exploit this flaw to gain
administrative privileges. (CVE-2013-1979)

A buffer overflow vulnerability was discovered in the Broadcom tg3 ethernet
driver for the Linux kernel. A local user could exploit this flaw to cause
a denial of service (crash the system) or potentially escalate privileges
on the system. (CVE-2013-1929)

A flaw was discovered in the Linux kernel's ftrace subsystem interface. A
local user could exploit this flaw to cause a denial of service (system
crash). (CVE-2013-3301)

Update instructions:

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

Ubuntu 12.04 LTS:
  linux-image-3.2.0-1432-omap4    3.2.0-1432.41

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-1839-1
  CVE-2013-1929, CVE-2013-1979, CVE-2013-2094, CVE-2013-3301

Package Information:
  https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.2.0-1432.41