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Ubuntu 17.10 USN-3617-1 Critical: Kernel Denial Of Service Attacks

ubuntu
Calendar Grey April 3, 2018
Scroller Ubuntu Esm H88
=========================================================================Ubuntu Security Notice USN-
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

Details:

It was discovered that a race condition leading to a use-after-free

vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A

local attacker could use this to cause a denial of service (system crash)

or possibly execute arbitrary code. (CVE-2017-0861)

It was discovered that the KVM implementation in the Linux kernel allowed

passthrough of the diagnostic I/O port 0x80. An attacker in a guest VM

could use this to cause a denial of service (system crash) in the host OS.

(CVE-2017-1000407)

It was discovered that a use-after-free vulnerability existed in the

network namespaces implementation in the Linux kernel. A local attacker

could use this to cause a denial of service (system crash) or possibly

execute arbitrary code. (CVE-2017-15129)

Andrey Konovalov discovered that the usbtest device driver in the Linux

kernel did not properly vali...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service vulnerability kernel ubuntu system crash linux kernel

Update Instructions

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

Ubuntu 17.10:
  linux-image-4.13.0-38-generic   4.13.0-38.43
  linux-image-4.13.0-38-generic-lpae  4.13.0-38.43
  linux-image-4.13.0-38-lowlatency  4.13.0-38.43
  linux-image-generic             4.13.0.38.41
  linux-image-generic-lpae        4.13.0.38.41
  linux-image-lowlatency          4.13.0.38.41

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-3617-1

CVE-2017-0861, CVE-2017-1000407, CVE-2017-15129, CVE-2017-16532,

CVE-2017-16537, CVE-2017-16645, CVE-2017-16646, CVE-2017-16647,

CVE-2017-16649, CVE-2017-16650, CVE-2017-16994, CVE-2017-17448,

CVE-2017-17450, CVE-2017-17741, CVE-2017-17805, CVE-2017-17806,

CVE-2017-17807, CVE-2017-18204, CVE-2018-1000026, CVE-2018-5332,

CVE-2018-5333, CVE-2018-5344

Severity
critical
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Critical

April 03, 2018

Topics%20covered

Topics Covered

security advisory denial of service vulnerability kernel ubuntu system crash linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux/4.13.0-38.43

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