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Ubuntu 12.04 LTS USN-2870-2 Critical: Kernel Denial Of Service Threat

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Calendar Grey January 19, 2016
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The CentOS 7 platform encountered vulnerabilities permitting unauthorized access or system failures, resolved through an essential system patch.
The system could be made to crash or run programs as an administrator.

Summary

The system could be made to crash or run programs as an administrator.

Software Description:

- linux-lts-trusty: Linux hardware enablement kernel from Trusty

Details:

Yevgeny Pats discovered that the session keyring implementation in the

Linux kernel did not properly reference count when joining an existing

session keyring. A local attacker could use this to cause a denial of

service (system crash) or possibly execute arbitrary code with

administrative privileges.

Topics%20covered

Topics Covered

security advisory denial of service kernel update ubuntu system crash administrative privileges

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.13.0-76-generic   3.13.0-76.120~precise1
  linux-image-3.13.0-76-generic-lpae  3.13.0-76.120~precise1

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.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

https://ubuntu.com/security/notices/USN-2870-2

https://ubuntu.com/security/notices/USN-2870-1

CVE-2016-0728

Severity
critical
Lowest
Low
Medium
High
Critical

January 19, 2016

Topics%20covered

Topics Covered

security advisory denial of service kernel update ubuntu system crash administrative privileges

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-76.120~precise1

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