[USN-3384-1] Linux kernel vulnerabilities

[Steve Beattie]

==========================================================================
Ubuntu Security Notice USN-3384-1
August 11, 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:

Andrey Konovalov discovered a race condition in the UDP Fragmentation
Offload (UFO) code in the Linux kernel. A local attacker could use this to
cause a denial of service or execute arbitrary code. (CVE-2017-1000112)

Andrey Konovalov discovered a race condition in AF_PACKET socket option
handling code in the Linux kernel. A local unprivileged attacker could use
this to cause a denial of service or possibly execute arbitrary code.
(CVE-2017-1000111)

Update instructions:

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

Ubuntu 17.04:
  linux-image-4.10.0-1015-raspi2  4.10.0-1015.18
  linux-image-4.10.0-32-generic   4.10.0-32.36
  linux-image-4.10.0-32-generic-lpae  4.10.0-32.36
  linux-image-4.10.0-32-lowlatency  4.10.0-32.36
  linux-image-generic             4.10.0.32.32
  linux-image-generic-lpae        4.10.0.32.32
  linux-image-lowlatency          4.10.0.32.32
  linux-image-raspi2              4.10.0.1015.16

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:
  https://www.ubuntu.com/usn/usn-3384-1
  CVE-2017-1000111, CVE-2017-1000112

Package Information:
  https://launchpad.net/ubuntu/+source/linux/4.10.0-32.36
  https://launchpad.net/ubuntu/+source/linux-raspi2/4.10.0-1015.18

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