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Ubuntu 14.04 LTS: USN-2764-1 Critical: Kernel Privilege Escalation

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Calendar Grey October 5, 2015
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Ubuntu patches target vulnerabilities leading to potential crashes and unauthorized breaches. Install update for effective protection.
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-utopic: Linux hardware enablement kernel from Utopic

Details:

Dmitry Vyukov discovered that the Linux kernel did not properly initialize

IPC object state in certain situations. A local attacker could use this to

escalate their privileges, expose confidential information, or cause a

denial of service (system crash).

Topics%20covered

Topics Covered

security advisory critical privilege escalation security fix ubuntu system crash linux-lts-utopic

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.16.0-50-generic   3.16.0-50.67~14.04.1
  linux-image-3.16.0-50-generic-lpae  3.16.0-50.67~14.04.1
  linux-image-3.16.0-50-lowlatency  3.16.0-50.67~14.04.1
  linux-image-3.16.0-50-powerpc-e500mc  3.16.0-50.67~14.04.1
  linux-image-3.16.0-50-powerpc-smp  3.16.0-50.67~14.04.1
  linux-image-3.16.0-50-powerpc64-emb  3.16.0-50.67~14.04.1
  linux-image-3.16.0-50-powerpc64-smp  3.16.0-50.67~14.04.1

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

CVE-2015-7613

Severity
critical
Lowest
Low
Medium
High
Critical

October 05, 2015

Topics%20covered

Topics Covered

security advisory critical privilege escalation security fix ubuntu system crash linux-lts-utopic

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-utopic/3.16.0-50.67~14.04.1

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