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Ubuntu 16.10 USN-3190-1 Critical: Kernel Denial of Service Threat

ubuntu
Calendar Grey February 3, 2017
Scroller Ubuntu Esm H88
It is essential to tackle critical kernel vulnerabilities in Ubuntu 16.10, as these may result in system instability and security risks. Immediate action is needed.
Several security issues were fixed in the kernel.

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 possibl...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu kernel

Update Instructions

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

Ubuntu 16.10:
  linux-image-4.8.0-37-generic    4.8.0-37.39
  linux-image-4.8.0-37-generic-lpae  4.8.0-37.39
  linux-image-4.8.0-37-lowlatency  4.8.0-37.39
  linux-image-4.8.0-37-powerpc-e500mc  4.8.0-37.39
  linux-image-4.8.0-37-powerpc-smp  4.8.0-37.39
  linux-image-4.8.0-37-powerpc64-emb  4.8.0-37.39
  linux-image-generic             4.8.0.37.46
  linux-image-generic-lpae        4.8.0.37.46
  linux-image-lowlatency          4.8.0.37.46
  linux-image-powerpc-e500mc      4.8.0.37.46
  linux-image-powerpc-smp         4.8.0.37.46
  linux-image-powerpc64-emb       4.8.0.37.46

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-3190-1

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

CVE-2016-9777

Severity
critical
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Critical

February 03, 2017

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu kernel

Package Information

https://launchpad.net/ubuntu/+source/linux/4.8.0-37.39

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