USN-3190-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-3190-1

3rd February, 2017

linux 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
  - Linux kernel
  
  

Details

Mikulas Patocka discovered that the asynchronous multibuffer cryptographic
daemon (mcryptd) in the Linux kernel did not properly handle being invoked
with incompatible algorithms. A local attacker could use this to cause a
denial of service (system crash). (CVE-2016-10147)

It was discovered that a use-after-free existed in the KVM susbsystem of
the Linux kernel when creating devices. A local attacker could use this to
cause a denial of service (system crash). (CVE-2016-10150)

Qidan He discovered that the ICMP implementation in the Linux kernel did
not properly check the size of an ICMP header. A local attacker with
CAP_NET_ADMIN could use this to expose sensitive information.
(CVE-2016-8399)

Qian Zhang discovered a heap-based buffer overflow in the tipc_msg_build()
function in the Linux kernel. A local attacker could use to cause a denial
of service (system crash) or possible execute arbitrary code with
administrative privileges. (CVE-2016-8632)

Dmitry Vyukov discovered that the KVM implementation in the Linux kernel
did not properly restrict the VCPU index when I/O APIC is enabled, An
attacker in a guest VM could use this to cause a denial of service (system
crash) or possibly gain privileges in the host OS. (CVE-2016-9777)

Update instructions

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

Ubuntu 16.10:

linux-image-4.8.0-37-powerpc64-emb

4.8.0-37.39

linux-image-powerpc-smp

4.8.0.37.46

linux-image-powerpc-e500mc

4.8.0.37.46

linux-image-4.8.0-37-generic

4.8.0-37.39

linux-image-generic

4.8.0.37.46

linux-image-4.8.0-37-powerpc-e500mc

4.8.0-37.39

linux-image-lowlatency

4.8.0.37.46

linux-image-4.8.0-37-lowlatency

4.8.0-37.39

linux-image-generic-lpae

4.8.0.37.46

linux-image-4.8.0-37-powerpc-smp

4.8.0-37.39

linux-image-4.8.0-37-generic-lpae

4.8.0-37.39

linux-image-powerpc64-emb

4.8.0.37.46

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-2016-10147,

CVE-2016-10150,

CVE-2016-8399,

CVE-2016-8632,

CVE-2016-9777