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Ubuntu 8.04 LTS USN-1507-1 Critical: Kernel Denial Of Service

ubuntu
Calendar Grey July 17, 2012
Scroller Ubuntu
Vital core vulnerabilities addressed in Ubuntu 8.04 LTS, necessitating urgent updates and a system restart to ensure security.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux: Linux kernel

Details:

A flaw was found in the Linux kernel's KVM (Kernel Virtual Machine) virtual

cpu setup. An unprivileged local user could exploit this flaw to crash the

system leading to a denial of service. (CVE-2012-1601)

An error was found in the Linux kernel's IPv6 netfilter when connection

tracking is enabled. A remote attacker could exploit this flaw to crash a

system if it is using IPv6 with the nf_contrack_ipv6 kernel module loaded.

(CVE-2012-2744)

Topics%20covered

Topics Covered

security advisory denial of service critical kernel ubuntu

Update Instructions

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

Ubuntu 8.04 LTS:
  linux-image-2.6.24-32-386       2.6.24-32.104
  linux-image-2.6.24-32-generic   2.6.24-32.104
  linux-image-2.6.24-32-hppa32    2.6.24-32.104
  linux-image-2.6.24-32-hppa64    2.6.24-32.104
  linux-image-2.6.24-32-itanium   2.6.24-32.104
  linux-image-2.6.24-32-lpia      2.6.24-32.104
  linux-image-2.6.24-32-lpiacompat  2.6.24-32.104
  linux-image-2.6.24-32-mckinley  2.6.24-32.104
  linux-image-2.6.24-32-openvz    2.6.24-32.104
  linux-image-2.6.24-32-powerpc   2.6.24-32.104
  linux-image-2.6.24-32-powerpc-smp  2.6.24-32.104
  linux-image-2.6.24-32-powerpc64-smp  2.6.24-32.104
  linux-image-2.6.24-32-rt        2.6.24-32.104
  linux-image-2.6.24-32-server    2.6.24-32.104
  linux-image-2.6.24-32-sparc64   2.6.24-32.104
  linux-image-2.6.24-32-sparc64-smp  2.6.24-32.104
  linux-image-2.6.24-32-virtual   2.6.24-32.104
  linux-image-2.6.24-32-xen       2.6.24-32.104

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-1507-1

CVE-2012-1601, CVE-2012-2744

Severity
critical
Lowest
Low
Medium
High
Critical

July 17, 2012

Topics%20covered

Topics Covered

security advisory denial of service critical kernel ubuntu

Package Information

https://launchpad.net/ubuntu/+source/linux/2.6.24-32.104

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