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Ubuntu 14.04 LTS: USN-3775-1 High: Kernel Security Issues

ubuntu
Calendar Grey October 1, 2018
Dist Ubuntu Esm H88
Ubuntu has addressed significant vulnerabilities in the Linux kernel. Applying these updates is essential for protecting against threats and ensuring your system's security
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 the paravirtualization implementation in the Linux

kernel did not properly handle some indirect calls, reducing the

effectiveness of Spectre v2 mitigations for paravirtual guests. A local

attacker could use this to expose sensitive information. (CVE-2018-15594)

It was discovered that microprocessors utilizing speculative execution and

prediction of return addresses via Return Stack Buffer (RSB) may allow

unauthorized memory reads via sidechannel attacks. An attacker could use

this to expose sensitive information. (CVE-2018-15572)

It was discovered that an integer overflow vulnerability existed in the

Linux kernel when loading an executable to run. A local attacker could use

this to gain administrative privileges. (CVE-2018-14634)

It was discovered that a stack-based buffer overflow existed in the iSCSI

target implementation of the Linux kernel. A...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow kernel high information disclosure ubuntu

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-160-generic  3.13.0-160.210
  linux-image-3.13.0-160-generic-lpae  3.13.0-160.210
  linux-image-3.13.0-160-lowlatency  3.13.0-160.210
  linux-image-3.13.0-160-powerpc-e500  3.13.0-160.210
  linux-image-3.13.0-160-powerpc-e500mc  3.13.0-160.210
  linux-image-3.13.0-160-powerpc-smp  3.13.0-160.210
  linux-image-3.13.0-160-powerpc64-emb  3.13.0-160.210
  linux-image-3.13.0-160-powerpc64-smp  3.13.0-160.210
  linux-image-generic             3.13.0.160.170
  linux-image-generic-lpae        3.13.0.160.170
  linux-image-lowlatency          3.13.0.160.170
  linux-image-powerpc-e500        3.13.0.160.170
  linux-image-powerpc-e500mc      3.13.0.160.170
  linux-image-powerpc-smp         3.13.0.160.170
  linux-image-powerpc64-emb       3.13.0.160.170
  linux-image-powerpc64-smp       3.13.0.160.170

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-3775-1

CVE-2018-14633, CVE-2018-14634, CVE-2018-15572, CVE-2018-15594,

CVE-2018-6554, CVE-2018-6555

October 01, 2018

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow kernel high information disclosure ubuntu

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-160.210

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