Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 496
Alerts This Week
Warning Icon 1 496

Ubuntu 16.10 USN-3162-2 Critical: Linux Kernel Multiple Issues

ubuntu
Calendar Grey December 20, 2016
Scroller Ubuntu
Ubuntu Security Notice USN-3162-3 resolves various vulnerabilities in the Linux kernel for Raspberry Pi 3 that impact Ubuntu.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-raspi2: Linux kernel for Raspberry Pi 2

Details:

CAI Qian discovered that shared bind mounts in a mount namespace

exponentially added entries without restriction to the Linux kernel's mount

table. A local attacker could use this to cause a denial of service (system

crash). (CVE-2016-6213)

Andreas Gruenbacher and Jan Kara discovered that the filesystem

implementation in the Linux kernel did not clear the setgid bit during a

setxattr call. A local attacker could use this to possibly elevate group

privileges. (CVE-2016-7097)

Marco Grassi discovered that the driver for Areca RAID Controllers in the

Linux kernel did not properly validate control messages. A local attacker

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

privileges. (CVE-2016-7425)

It was discovered that the KVM implementation for x86/x86_64 in the Linux

kernel could dereference a null pointer. An attacker in ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service privilege escalation ubuntu system crash linux kernel raspberry pi

Update Instructions

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

Ubuntu 16.10:
  linux-image-4.8.0-1021-raspi2   4.8.0-1021.24
  linux-image-raspi2              4.8.0.1021.24

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-3162-2

https://ubuntu.com/security/notices/USN-3162-1

CVE-2016-6213, CVE-2016-7097, CVE-2016-7425, CVE-2016-8630,

CVE-2016-8633, CVE-2016-8645, CVE-2016-9313, CVE-2016-9555

Severity
critical
Lowest
Low
Medium
High
Critical

December 20, 2016

Topics%20covered

Topics Covered

security advisory denial of service privilege escalation ubuntu system crash linux kernel raspberry pi

Package Information

https://launchpad.net/ubuntu/+source/linux-raspi2/4.8.0-1021.24

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.