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Ubuntu 16.04 LTS: USN-3016-3 Critical: Linux Kernel Information Leak

ubuntu
Calendar Grey June 27, 2016
Scroller Ubuntu
Numerous vulnerabilities addressed in Ubuntu 16.04 LTS kernel. Essential update guidelines and security flaw specifics provided.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-snapdragon: Linux kernel for Snapdragon Processors

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, CVE-2016-4578)

...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service information leak critical system update ubuntu linux-snapdragon

Update Instructions

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

Ubuntu 16.04 LTS:
  linux-image-4.4.0-1019-snapdragon  4.4.0-1019.22

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-3016-3

https://ubuntu.com/security/notices/USN-3016-1

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
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Critical

June 27, 2016

Topics%20covered

Topics Covered

security advisory denial of service information leak critical system update ubuntu linux-snapdragon

Package Information

https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1019.22

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