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Ubuntu 16.10 USN-3190-2: Moderate Kernel DoS Threats Analysis

ubuntu
Calendar Grey February 10, 2017
Dist Ubuntu Esm H88
=========================================================================Ubuntu Security Notice USN-
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-raspi2: Linux kernel for Raspberry Pi 2

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...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service security issue kernel update ubuntu system crash linux-raspi2

Update Instructions

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

Ubuntu 16.10:
  linux-image-4.8.0-1024-raspi2   4.8.0-1024.27
  linux-image-raspi2              4.8.0.1024.27

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-3190-2

https://ubuntu.com/security/notices/USN-3190-1

CVE-2016-10147, CVE-2016-10150, CVE-2016-8399, CVE-2016-8632,

CVE-2016-9777

February 10, 2017

Topics%20covered

Topics Covered

security advisory denial of service security issue kernel update ubuntu system crash linux-raspi2

Package Information

https://launchpad.net/ubuntu/+source/linux-raspi2/4.8.0-1024.27

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