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Ubuntu 14.04 LTS USN-3798-1 Critical: Denial Of Service Threats

ubuntu
Calendar Grey October 23, 2018
Dist Ubuntu Esm H88
Recent kernel updates improve security for Ubuntu 14.04 LTS users. A system restart is required after installation to fully apply these enhancements
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:

Dmitry Vyukov discovered that the key management subsystem in the Linux

kernel did not properly restrict adding a key that already exists but is

negatively instantiated. A local attacker could use this to cause a denial

of service (system crash) or possibly execute arbitrary code.

(CVE-2015-8539)

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

driver for XCeive xc2028/xc3028 tuners in the Linux kernel. A local

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

possibly execute arbitrary code. (CVE-2016-7913)

Pengfei Ding (???), Chenfu Bao (???), and Lenx Wei (??)

discovered a race condition in the generic SCSI driver (sg) of the Linux

kernel. A local attacker could use this to cause a denial of service

(system crash) or possibly execute arbitrary code. (CVE-2017-0794)

Eric Biggers discovered that t...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service security issue critical Ubuntu kernel system crash

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-161-generic  3.13.0-161.211
  linux-image-3.13.0-161-generic-lpae  3.13.0-161.211
  linux-image-3.13.0-161-lowlatency  3.13.0-161.211
  linux-image-3.13.0-161-powerpc-e500  3.13.0-161.211
  linux-image-3.13.0-161-powerpc-e500mc  3.13.0-161.211
  linux-image-3.13.0-161-powerpc-smp  3.13.0-161.211
  linux-image-3.13.0-161-powerpc64-emb  3.13.0-161.211
  linux-image-3.13.0-161-powerpc64-smp  3.13.0-161.211
  linux-image-generic             3.13.0.161.171
  linux-image-generic-lpae        3.13.0.161.171
  linux-image-highbank            3.13.0.161.171
  linux-image-lowlatency          3.13.0.161.171
  linux-image-powerpc-e500        3.13.0.161.171
  linux-image-powerpc-e500mc      3.13.0.161.171
  linux-image-powerpc-smp         3.13.0.161.171
  linux-image-powerpc64-emb       3.13.0.161.171
  linux-image-powerpc64-smp       3.13.0.161.171

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-3798-1

CVE-2015-8539, CVE-2016-7913, CVE-2017-0794, CVE-2017-15299,

CVE-2017-18216, CVE-2018-1000004, CVE-2018-7566, CVE-2018-9518

Severity
critical
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Critical

October 23, 2018

Topics%20covered

Topics Covered

security advisory denial of service security issue critical Ubuntu kernel system crash

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-161.211

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