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

×
Alerts This Week
Warning Icon 1 530
Alerts This Week
Warning Icon 1 530

Ubuntu 16.04 LTS USN-3292-2 Urgent: Linux Kernel Heap Overflow DoS Issue

ubuntu
Calendar Grey May 17, 2017
Dist Ubuntu Esm H88
Debian's DSA-4821-1 tackles a severe security flaw in the systemd package that may result in service disruptions and unauthorized command execution.
The system could be made to crash or run programs as an administrator.

Summary

The system could be made to crash or run programs as an administrator.

Software Description:

- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

USN-3292-1 fixed a vulnerability in the Linux kernel for Ubuntu 16.10.

This update provides the corresponding updates for the Linux Hardware

Enablement (HWE) kernel from Ubuntu 16.10 for Ubuntu 16.04 LTS.

Jason Donenfeld discovered a heap overflow in the MACsec module in the

Linux kernel. An attacker could use this to cause a denial of service

(system crash) or possibly execute arbitrary code.

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu heap overflow linux-hwe

Update Instructions

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

Ubuntu 16.04 LTS:
  linux-image-4.8.0-52-generic    4.8.0-52.55~16.04.1
  linux-image-4.8.0-52-generic-lpae  4.8.0-52.55~16.04.1
  linux-image-4.8.0-52-lowlatency  4.8.0-52.55~16.04.1
  linux-image-generic-hwe-16.04   4.8.0.52.23
  linux-image-generic-lpae-hwe-16.04  4.8.0.52.23
  linux-image-lowlatency-hwe-16.04  4.8.0.52.23

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-3292-2

https://ubuntu.com/security/notices/USN-3292-1

CVE-2017-7477

Severity
critical
Lowest
Low
Medium
High
Critical

May 17, 2017

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu heap overflow linux-hwe

Package Information

https://launchpad.net/ubuntu/+source/linux-hwe/4.8.0-52.55~16.04.1

Get the latest News and Insights

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