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Alerts This Week
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Ubuntu 11.04 USN-1228-1 Critical Kernel Flaws Exploited

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Calendar Grey October 12, 2011
Scroller Ubuntu
The Ubuntu Security Notice USN-1234-1 brings attention to vulnerabilities in Ubuntu 11.10, addressing multiple urgent patches that need immediate implementation.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-ti-omap4: Linux kernel for OMAP4

Details:

Timo Warns discovered that the EFI GUID partition table was not correctly

parsed. A physically local attacker that could insert mountable devices

could exploit this to crash the system or possibly gain root privileges.

(CVE-2011-1776)

Dan Rosenberg discovered that the IPv4 diagnostic routines did not

correctly validate certain requests. A local attacker could exploit this to

consume CPU resources, leading to a denial of service. (CVE-2011-2213)

Dan Rosenberg discovered that the Bluetooth stack incorrectly handled

certain L2CAP requests. If a system was using Bluetooth, a remote attacker

could send specially crafted traffic to crash the system or gain root

privileges. (CVE-2011-2497)

It was discovered that the EXT4 filesystem contained multiple off-by-one

flaws. A local attacker could exploit this to crash the system, leading to

a de...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory Ubuntu kernel issues critical fixes OMAP4

Update Instructions

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

Ubuntu 11.04:
  linux-image-2.6.38-1209-omap4   2.6.38-1209.16

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

https://ubuntu.com/security/notices/USN-1228-1

CVE-2011-1776, CVE-2011-2213, CVE-2011-2497, CVE-2011-2695,

CVE-2011-2700, CVE-2011-2723, CVE-2011-2928, CVE-2011-3188,

CVE-2011-3191

Severity
critical
Lowest
Low
Medium
High
Critical

October 12, 2011

Topics%20covered

Topics Covered

security advisory Ubuntu kernel issues critical fixes OMAP4

Package Information

https://launchpad.net/ubuntu/+source/linux-ti-omap4/2.6.38-1209.16

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