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Ubuntu 16.04 LTS: 3331-1 Critical: Linux Kernel Security Issues

ubuntu
Calendar Grey June 20, 2017
Dist Ubuntu Esm H88
Ubuntu 20.04 LTS has resolved vital security issues with updates to the Linux kernel, improving overall system stability.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

Details:

It was discovered that the stack guard page for processes in the Linux

kernel was not sufficiently large enough to prevent overlapping with the

heap. An attacker could leverage this with another vulnerability to execute

arbitrary code and gain administrative privileges (CVE-2017-1000364)

Roee Hay discovered that the parallel port printer driver in the Linux

kernel did not properly bounds check passed arguments. A local attacker

with write access to the kernel command line arguments could use this to

execute arbitrary code. (CVE-2017-1000363)

A reference count bug was discovered in the Linux kernel ipx protocol

stack. A local attacker could exploit this flaw to cause a denial of

service or possibly other unspecified problems. (CVE-2017-7487)

A double free bug was discovered in the IPv4 stack of the Linux ke...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu kernel fixes linux-aws

Update Instructions

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

Ubuntu 16.04 LTS:
  linux-image-4.4.0-1020-aws      4.4.0-1020.29

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-3331-1

CVE-2017-1000363, CVE-2017-1000364, CVE-2017-7487, CVE-2017-8890,

CVE-2017-9074, CVE-2017-9075, CVE-2017-9076, CVE-2017-9077,

CVE-2017-9242

Severity
critical
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Critical

June 19, 2017

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu kernel fixes linux-aws

Package Information

https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1020.29

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