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Ubuntu 14.04 LTS USN-2968-1: Critical Denial Of Service Issues

ubuntu
Calendar Grey May 9, 2016
Scroller Ubuntu
Keep updated with Ubuntu 14.04 LTS security patches that tackle kernel flaws and associated hazards.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux: Linux kernel

Details:

Ralf Spenneberg discovered that the Aiptek Tablet USB device driver in the

Linux kernel did not properly sanity check the endpoints reported by the

device. An attacker with physical access could cause a denial of service

(system crash). (CVE-2015-7515)

Ben Hawkes discovered that the Linux kernel's AIO interface allowed single

writes greater than 2GB, which could cause an integer overflow when writing

to certain filesystems, socket or device types. A local attacker could this

to cause a denial of service (system crash) or possibly execute arbitrary

code. (CVE-2015-8830)

It was discovered that the Linux kernel did not keep accurate track of pipe

buffer details when error conditions occurred, due to an incomplete fix for

CVE-2015-1805. A local attacker could use this to cause a denial of service

(system crash) or possibly execute arbitrary code with administrative

privileges. (C...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service ubuntu system crash usb threats kernel issues

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-86-generic   3.13.0-86.130
  linux-image-3.13.0-86-generic-lpae  3.13.0-86.130
  linux-image-3.13.0-86-lowlatency  3.13.0-86.130
  linux-image-3.13.0-86-powerpc-e500  3.13.0-86.130
  linux-image-3.13.0-86-powerpc-e500mc  3.13.0-86.130
  linux-image-3.13.0-86-powerpc-smp  3.13.0-86.130
  linux-image-3.13.0-86-powerpc64-emb  3.13.0-86.130
  linux-image-3.13.0-86-powerpc64-smp  3.13.0-86.130

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-2968-1

CVE-2015-7515, CVE-2015-8830, CVE-2016-0774, CVE-2016-0821,

CVE-2016-2184, CVE-2016-2185, CVE-2016-2186, CVE-2016-2188,

CVE-2016-3136, CVE-2016-3137, CVE-2016-3138, CVE-2016-3140,

CVE-2016-3156, CVE-2016-3157, CVE-2016-3689

Severity
critical
Lowest
Low
Medium
High
Critical

May 09, 2016

Topics%20covered

Topics Covered

security advisory denial of service ubuntu system crash usb threats kernel issues

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-86.130

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