USN-3358-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-3358-1

20th July, 2017

linux, linux-raspi2 vulnerabilities

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

Ubuntu 17.04

Summary

Several security issues were fixed in the Linux kernel.

Software description

linux
– Linux kernel
linux-raspi2
– Linux kernel for Raspberry Pi 2

Details

It was discovered that the Linux kernel did not properly initialize a Wake-
on-Lan data structure. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2014-9900)

Alexander Potapenko discovered a race condition in the Advanced Linux Sound
Architecture (ALSA) subsystem in the Linux kernel. A local attacker could
use this to expose sensitive information (kernel memory).
(CVE-2017-1000380)

Li Qiang discovered that the DRM driver for VMware Virtual GPUs in the
Linux kernel did not properly validate some ioctl arguments. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2017-7346)

Murray McAllister discovered that the DRM driver for VMware Virtual GPUs in
the Linux kernel did not properly initialize memory. A local attacker could
use this to expose sensitive information (kernel memory). (CVE-2017-9605)

Update instructions

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

Ubuntu 17.04:: linux-image-4.10.0-28-generic-lpae

4.10.0-28.32; linux-image-generic-lpae 4.10.0.28.29; linux-image-4.10.0-28-generic

4.10.0-28.32; linux-image-generic 4.10.0.28.29; linux-image-4.10.0-28-lowlatency

4.10.0-28.32; linux-image-4.10.0-1011-raspi2

4.10.0-1011.14; linux-image-lowlatency 4.10.0.28.29; linux-image-raspi2 4.10.0.1011.13

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.