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Ubuntu 14.04 LTS USN-3020-1 Critical: Kernel Issues Risk Code Execution

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Calendar Grey June 27, 2016
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Stay updated on Ubuntu 14.04 LTS patch USN-3020-1 addressing critical kernel issues to prevent system crashes.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-vivid: Linux hardware enablement kernel from Vivid for Trusty

Details:

Jesse Hertz and Tim Newsham discovered that the Linux netfilter

implementation did not correctly perform validation when handling 32 bit

compatibility IPT_SO_SET_REPLACE events on 64 bit platforms. A local

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

crash) or execute arbitrary code with administrative privileges.

(CVE-2016-4997)

Kangjie Lu discovered an information leak in the core USB implementation in

the Linux kernel. A local attacker could use this to obtain potentially

sensitive information from kernel memory. (CVE-2016-4482)

Kangjie Lu discovered an information leak in the timer handling

implementation in the Advanced Linux Sound Architecture (ALSA) subsystem of

the Linux kernel. A local attacker could use this to obtain potentially

sensitive information from kernel memory. (CVE-2016-4569,...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service information leak 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-3.19.0-64-generic   3.19.0-64.72~14.04.1
  linux-image-3.19.0-64-generic-lpae  3.19.0-64.72~14.04.1
  linux-image-3.19.0-64-lowlatency  3.19.0-64.72~14.04.1
  linux-image-3.19.0-64-powerpc-e500mc  3.19.0-64.72~14.04.1
  linux-image-3.19.0-64-powerpc-smp  3.19.0-64.72~14.04.1
  linux-image-3.19.0-64-powerpc64-emb  3.19.0-64.72~14.04.1
  linux-image-3.19.0-64-powerpc64-smp  3.19.0-64.72~14.04.1

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-3020-1

CVE-2016-4482, CVE-2016-4569, CVE-2016-4578, CVE-2016-4580,

CVE-2016-4913, CVE-2016-4951, CVE-2016-4997, CVE-2016-4998

Severity
critical
Lowest
Low
Medium
High
Critical

June 27, 2016

Topics%20covered

Topics Covered

security advisory denial of service information leak Ubuntu kernel system crash

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-vivid/3.19.0-64.72~14.04.1

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