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Ubuntu Security Notice USN-2763-1

Ubuntu Security Notice USN-2763-1
Posted Oct 6, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2763-1 - 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).

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2015-7613
MD5 | 6cd9945d6746a03d10a3a663a6361a41

Ubuntu Security Notice USN-2763-1

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Content-Disposition: inline

==========================================================================Ubuntu Security Notice USN-2763-1
October 05, 2015

linux-lts-trusty vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.04 LTS

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:

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).

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 3.13.0-65.106~precise1
linux-image-3.13.0-65-generic-lpae 3.13.0-65.106~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:
http://www.ubuntu.com/usn/usn-2763-1
CVE-2015-7613

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-65.106~precise1

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