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Ubuntu 10.04 LTS USN-1535-1 Moderate: Kernel Exploit Risks

ubuntu
Calendar Grey August 10, 2012
Scroller Ubuntu
Kernel vulnerabilities resolved through Ubuntu patches; seek comprehensive guidelines for safeguarding updates and ensuring system integrity.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux: Linux kernel

Details:

An error was discovered in the Linux kernel's network TUN/TAP device

implementation. A local user with access to the TUN/TAP interface (which is

not available to unprivileged users until granted by a root user) could

exploit this flaw to crash the system or potential gain administrative

privileges. (CVE-2012-2136)

An error was discovered in the Linux kernel's memory subsystem (hugetlb).

An unprivileged local user could exploit this flaw to cause a denial of

service (crash the system). (CVE-2012-2390)

Topics%20covered

Topics Covered

security advisory moderate kernel ubuntu system crash administrative access

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-2.6.32-42-386       2.6.32-42.95
  linux-image-2.6.32-42-generic   2.6.32-42.95
  linux-image-2.6.32-42-generic-pae  2.6.32-42.95
  linux-image-2.6.32-42-ia64      2.6.32-42.95
  linux-image-2.6.32-42-lpia      2.6.32-42.95
  linux-image-2.6.32-42-powerpc   2.6.32-42.95
  linux-image-2.6.32-42-powerpc-smp  2.6.32-42.95
  linux-image-2.6.32-42-powerpc64-smp  2.6.32-42.95
  linux-image-2.6.32-42-preempt   2.6.32-42.95
  linux-image-2.6.32-42-server    2.6.32-42.95
  linux-image-2.6.32-42-sparc64   2.6.32-42.95
  linux-image-2.6.32-42-sparc64-smp  2.6.32-42.95
  linux-image-2.6.32-42-versatile  2.6.32-42.95
  linux-image-2.6.32-42-virtual   2.6.32-42.95

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

https://ubuntu.com/security/notices/USN-1535-1

CVE-2012-2136, CVE-2012-2390

Severity
important
Lowest
Low
Medium
High
Critical

August 10, 2012

Topics%20covered

Topics Covered

security advisory moderate kernel ubuntu system crash administrative access

Package Information

https://launchpad.net/ubuntu/+source/linux/2.6.32-42.95

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