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Ubuntu 14.04 LTS USN-3422-1 Critical: Kernel Security Threats

ubuntu
Calendar Grey September 18, 2017
Dist Ubuntu Esm H88
Several kernel vulnerabilities addressed in Ubuntu, impacting system security and reliability. Urgent updates advised for every user.
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 buffer overflow existed in the Bluetooth stack of

the Linux kernel when handling L2CAP configuration responses. A physically

proximate attacker could use this to cause a denial of service (system

crash). (CVE-2017-1000251)

It was discovered that the asynchronous I/O (aio) subsystem of the Linux

kernel did not properly set permissions on aio memory mappings in some

situations. An attacker could use this to more easily exploit other

vulnerabilities. (CVE-2016-10044)

Baozeng Ding and Andrey Konovalov discovered a race condition in the L2TPv3

IP Encapsulation 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-2016-10200)

Andreas Gruenbacher and Jan Kara discovered that the filesystem

implementation in the Linux kernel did not clear the setgid bit d...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow Ubuntu memory leak 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-3.13.0-132-generic  3.13.0-132.181
  linux-image-3.13.0-132-generic-lpae  3.13.0-132.181
  linux-image-3.13.0-132-lowlatency  3.13.0-132.181
  linux-image-3.13.0-132-powerpc-e500  3.13.0-132.181
  linux-image-3.13.0-132-powerpc-e500mc  3.13.0-132.181
  linux-image-3.13.0-132-powerpc-smp  3.13.0-132.181
  linux-image-3.13.0-132-powerpc64-emb  3.13.0-132.181
  linux-image-3.13.0-132-powerpc64-smp  3.13.0-132.181
  linux-image-generic             3.13.0.132.141
  linux-image-generic-lpae        3.13.0.132.141
  linux-image-lowlatency          3.13.0.132.141
  linux-image-powerpc-e500        3.13.0.132.141
  linux-image-powerpc-e500mc      3.13.0.132.141
  linux-image-powerpc-smp         3.13.0.132.141
  linux-image-powerpc64-emb       3.13.0.132.141
  linux-image-powerpc64-smp       3.13.0.132.141

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-3422-1

CVE-2016-10044, CVE-2016-10200, CVE-2016-7097, CVE-2016-8650,

CVE-2016-9083, CVE-2016-9084, CVE-2016-9178, CVE-2016-9191,

CVE-2016-9604, CVE-2016-9754, CVE-2017-1000251, CVE-2017-5970,

CVE-2017-6214, CVE-2017-6346, CVE-2017-6951, CVE-2017-7187,

CVE-2017-7472, CVE-2017-7541

Severity
critical
Lowest
Low
Medium
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Critical

September 18, 2017

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow Ubuntu memory leak kernel system crash

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-132.181

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