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Alerts This Week
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Ubuntu 12.04 LTS USN-2749-1 Critical: Kernel Security Issues

ubuntu
Calendar Grey September 29, 2015
Scroller Ubuntu
=========================================================================Ubuntu Security Notice USN-
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

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

Details:

Benjamin Randazzo discovered an information leak in the md (multiple

device) driver when the bitmap_info.file is disabled. A local privileged

attacker could use this to obtain sensitive information from the kernel.

(CVE-2015-5697)

Marc-André Lureau discovered that the vhost driver did not properly

release the userspace provided log file descriptor. A privileged attacker

could use this to cause a denial of service (resource exhaustion).

(CVE-2015-6252)

Topics%20covered

Topics Covered

security advisory denial of service security issue information leak kernel update critical severity linux-lts-trusty

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.13.0-65-generic   3.13.0-65.105~precise1
  linux-image-3.13.0-65-generic-lpae  3.13.0-65.105~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. 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-2749-1

CVE-2015-5697, CVE-2015-6252

Severity
critical
Lowest
Low
Medium
High
Critical

September 29, 2015

Topics%20covered

Topics Covered

security advisory denial of service security issue information leak kernel update critical severity linux-lts-trusty

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-65.105~precise1

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