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Ubuntu 10.04 LTS USN-1455-1 Addresses Moderate Kernel Denial of Service

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Calendar Grey May 30, 2012
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Ubuntu 10.04 LTS patches address critical kernel vulnerabilities that could lead to service interruptions. Make sure to keep your system current.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-backport-oneiric: Linux kernel backport from Oneiric

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)

Steve Grubb reported a flaw with Linux fscaps (file system base

capabilities) when used to increase the permissions of a process. For

application on which fscaps are in use a local attacker can disable address

space randomization to make attacking the process with raised privileges

easier. (CVE-2012-2123)

Topics%20covered

Topics Covered

security advisory denial of service kernel system update ubuntu linux backport

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-3.0.0-20-generic    3.0.0-20.34~lucid1
  linux-image-3.0.0-20-generic-pae  3.0.0-20.34~lucid1
  linux-image-3.0.0-20-server     3.0.0-20.34~lucid1
  linux-image-3.0.0-20-virtual    3.0.0-20.34~lucid1

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-1455-1

CVE-2012-1601, CVE-2012-2123

Severity
important
Lowest
Low
Medium
High
Critical

May 30, 2012

Topics%20covered

Topics Covered

security advisory denial of service kernel system update ubuntu linux backport

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-backport-oneiric/3.0.0-20.34~lucid1

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