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Ubuntu 16.04 LTS USN-3342-2 Moderate: Linux Kernel Denial Of Service

ubuntu
Calendar Grey June 29, 2017
Dist Ubuntu Esm H88
The Ubuntu Security Notice USN-3342-2 highlights crucial kernel updates that fix vulnerabilities threatening system integrity, urging users to install them for better security and performance
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

USN-3342-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.10.

This update provides the corresponding updates for the Linux Hardware

Enablement (HWE) kernel from Ubuntu 16.10 for Ubuntu 16.04 LTS.

USN-3333-1 fixed a vulnerability in the Linux kernel. However, that

fix introduced regressions for some Java applications. This update

addresses the issue. We apologize for the inconvenience.

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

encryption subsystem in the Linux kernel. A local attacker could use this

to cause a denial of service (system crash). (CVE-2017-7374)

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-201...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service kernel system update ubuntu security issues linux hwe

Update Instructions

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

Ubuntu 16.04 LTS:
  linux-image-4.8.0-58-generic    4.8.0-58.63~16.04.1
  linux-image-4.8.0-58-generic-lpae  4.8.0-58.63~16.04.1
  linux-image-4.8.0-58-lowlatency  4.8.0-58.63~16.04.1
  linux-image-generic-hwe-16.04   4.8.0.58.29
  linux-image-generic-lpae-hwe-16.04  4.8.0.58.29
  linux-image-lowlatency-hwe-16.04  4.8.0.58.29

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-3333-1

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1699772

CVE-2017-1000363, CVE-2017-5577, CVE-2017-7294, CVE-2017-7374,

CVE-2017-8890, CVE-2017-9074, CVE-2017-9075, CVE-2017-9076,

CVE-2017-9077, CVE-2017-9242

Severity
important
Lowest
Low
Medium
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Critical

June 29, 2017

Topics%20covered

Topics Covered

security advisory denial of service kernel system update ubuntu security issues linux hwe

Package Information

https://launchpad.net/ubuntu/+source/linux-hwe/4.8.0-58.63~16.04.1

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