USN-3037-1: Linux kernel (Vivid HWE) vulnerability

Ubuntu Security Notice USN-3037-1

14th July, 2016

linux-lts-vivid vulnerability

A security issue affects these releases of Ubuntu and its
derivatives:

Ubuntu 14.04 LTS

Summary

The system could be made to crash under certain conditions.

Software description

linux-lts-vivid
– Linux hardware enablement kernel from Vivid for Trusty

Details

Jan Stancek discovered that the Linux kernel's memory manager did not
properly handle moving pages mapped by the asynchronous I/O (AIO) ring
buffer to the other nodes. A local attacker could use this to cause a
denial of service (system crash).

Update instructions

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

Ubuntu 14.04 LTS:: linux-image-3.19.0-65-powerpc64-smp

3.19.0-65.73~14.04.1; linux-image-3.19.0-65-powerpc-smp

3.19.0-65.73~14.04.1; linux-image-3.19.0-65-powerpc-e500mc

3.19.0-65.73~14.04.1; linux-image-3.19.0-65-powerpc64-emb

3.19.0-65.73~14.04.1; linux-image-3.19.0-65-generic

3.19.0-65.73~14.04.1; linux-image-3.19.0-65-generic-lpae

3.19.0-65.73~14.04.1; linux-image-3.19.0-65-lowlatency

3.19.0-65.73~14.04.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

CVE-2016-3070

Source: USN-3037-1: Linux kernel (Vivid HWE) vulnerability

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