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=========================================================================Ubuntu Security Notice USN-3170-2
January 11, 2017

linux-raspi2 vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.10

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux-raspi2: Linux kernel for Raspberry Pi 2

Details:

Andrey Konovalov discovered that the ipv6 icmp implementation in the Linux
kernel did not properly check data structures on send. A remote attacker
could use this to cause a denial of service (system crash). (CVE-2016-9919)

Andrey Konovalov discovered that signed integer overflows existed in the
setsockopt() system call when handling the SO_SNDBUFFORCE and
SO_RCVBUFFORCE options. A local attacker with the CAP_NET_ADMIN capability
could use this to cause a denial of service (system crash or memory
corruption). (CVE-2016-9793)

Update instructions:

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

Ubuntu 16.10:
  linux-image-4.8.0-1022-raspi2   4.8.0-1022.25
  linux-image-raspi2              4.8.0.1022.25

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://ubuntu.com/security/notices/USN-3170-2
  https://ubuntu.com/security/notices/USN-3170-1
  CVE-2016-9793, CVE-2016-9919

Package Information:
  https://launchpad.net/ubuntu/+source/linux-raspi2/4.8.0-1022.25

Ubuntu 3170-2: Linux kernel (Raspberry Pi 2) vulnerabilities

January 11, 2017
Several security issues were fixed in the kernel.

Summary

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 16.10: linux-image-4.8.0-1022-raspi2 4.8.0-1022.25 linux-image-raspi2 4.8.0.1022.25 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://ubuntu.com/security/notices/USN-3170-2

https://ubuntu.com/security/notices/USN-3170-1

CVE-2016-9793, CVE-2016-9919

Severity
January 11, 2017

Package Information

https://launchpad.net/ubuntu/+source/linux-raspi2/4.8.0-1022.25

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